Brief introduction of the main parts of the package plastic analysis of metallic hose

Plastic coated metal hydraulic hose adapters adopts the material of main parts of austenitic stainless steel, so as to ensure the plastic coated metal hose excellent heat resistance and corrosion resistance, metal hose plastic package operating temperature range of -196-600 DEG C, the maximum, in the actual use of the process, according to the pipeline corrosion medium of choice corresponding stainless steel grades, can ensure the package the corrosion resistance of plastic metal hose.
The annular plastic coated metal hose assembly is a corrugated pipe shaped casing closed circular, between the wave and the wave formed by a series of corrugated rings. The annular plastic coated metal hose by welding seamless pipe or tube forming process. Restricted by the way of processing, compared with the spiral corrugated pipe, the tube length is usually shorter.
Plastic coated metal hose is plastic metal hose through high precision plastic forming by a very thin wall seamless or the welding of stainless steel package. Due to the elastic properties of plastic coated metal hose profile determines the hose has good flexibility and fatigue resistance, making it very easy to absorb all kinds of motion and deformation of cyclic loading, especially has the ability to compensate for large displacement in pipeline system.

Difficulties and challenges in the development of stainless steel metal hose industry

Core Tip: Stainless steel metal hydraulic hose plays an important role in modern industry, used in civilian areas are also many. Under the new situation, the industry is facing many difficulties and challenges, major enterprises
Stainless steel metal hydraulic hose and fittings plays an important role in modern industry, used in civilian areas are also many. Under the new situation, the industry is facing many difficulties and challenges, the major companies have demonstrated a positive attitude to deal with.
1, technical improvements and R & D capabilities further enhanced.
A accelerate industrial innovation system, promote the development of stainless steel metal hose and industrial applications;
B development of environmentally friendly production and recycling economy, the implementation of national and industry energy conservation objectives, tasks, resources and environmental constraints ease;
C promote stainless steel metal hose industry in fiber, high-end equipment, energy saving and environmental protection, brand marketing and other aspects of national strategic emerging industries, cultural industries combined, especially prominent stainless steel metal hose products in new materials, new energy, energy saving and environmental protection strategy The new innovations in the field of development and application of optical fiber industry closely integrated development model.
2, property conscious. Government departments vigorously outreach intellectual knowledge and improve awareness of intellectual property stainless steel metal hose SMEs. Conduct special training, training for stainless steel metal hose IPR SME managers. Counseling on patents, patent agents, patent and patent warning service stainless steel metal hose SME activities, fostered a number of stainless steel metal hose SMEs proprietary advantage, improve industry SME creation, utilization, protection and management of intellectual property rights ability.
3, improve the quality and standard management. SMEs to carry out activities in the industry's commitment to quality, build quality and integrity of the system, to improve the quality level of integrity and self-discipline. Strengthening SME brand building guide, stainless steel metal hose clothing SMEs to enhance brand value and provide technical support. SMEs to actively promote the industry standard of good conduct business activities to create and improve the management level of standardization.
Development of stainless steel metal hose industry enterprises and governments to be joint action, in the government's macro-control of the overall situation of the industry, the difficulties and challenges will be transformed into an effective driving force for development.

Characteristics of the metal flexible joints

Corrosion resistance: 1 main metal soft joint with 304 or 316L stainless steel molding, made of stainless steel or carbon steel joints at both ends of the joint, has good corrosion resistance. Ensure that the sealing. 2 the appearance of the United States: metal soft joint appearance Cheng Liang, permanent bright as new. 3 high voltage: considering many practical work pressure, metal soft joint use of the environment and the use of state, all of the parameters are the result of a careful calculation and experiment, to ensure that the pressure in work safety. The 4 shock proof, dislocation: stainless steel corrugated hydraulic hose manufacturers has good flexibility and compensation displacement characteristics. The 5 construction is good: metal soft joint for the thin wall hydraulic hose fittings , our company mainly engaged in stainless steel metal hose, the overall weight, greatly reduces the load of construction operation and construction time. 6: Cangzhou Zhongwei tube manufacturing many kinds of existing metal soft joint diameter range: DN8-DN4000, other customized according to customer requirements.

The use of high-pressure hose size

When the high-pressure hose be withheld , will always produce withhold too tight or too loose phenomenon, and these phenomena often lead to adverse effects of high pressure hose . Today we say it is the size of the amount withheld would it have any effect on the high-pressure hydraulic hose assemblys . We carried out by the following detailed understanding .Withhold the amount and rate of withholding high pressure hose and fittings assembly when the improper or joint structure and material , size selection is unreasonable, can lead to high pressure hydraulic hose fitting and fittings withholding too tight or too loose will cause early damage to the joints .
When assembled , if the withholding amount is too small, that is between the high pressure hose connector and cut through the loose , high pressure hose there may emerge in the role of oil in the early use from the joint ; If withholding is too large, then the connector and hydraulic hose fittings too tight , easily lead to hose inner being localized damage, cracks , directly into the high-pressure oil from the ruptured steel layer , and then he went to the wire along the gap between the spray coat tails , or has fled somewhere along the wire layer build up , so that the outer layer of plastic to produce drum kits and even rupture . Hoses and connectors in the assembly, if the withholding too fast, likely to cause damage to the plastic layer and the wire break, so that premature failure of the hose in use .
The above information is very detailed description of the effect of the size of the amount withheld for the use of high-pressure hose produced , so we need considerable attention when using this withholding his dosage size is accurate, whether the mutation will produce high pressure hose , etc. problems should close attention.

The role of the metal hose

Metal hose used for automated meter signal wire protection tube and instrument meter circuit protection tube for protection, the protection of precision optical ruler, protecting the sensor lines threading stainless steel metal hydraulic adapter, metal hose electrical protection; stainless hydraulic hoses, softness is good, dustproof, waterproof, anti-oil, anti-rust; anti-wear, and provide some shielding effect. Sensing for precision optical ruler of circuit protection, industrial sensor circuit protection. Has good flexibility, corrosion resistance, high temperature resistance, wear resistance, tensile strength.

Copper brazed directly Problems

Direct Copper brazing mainly two: the need to use corrosive aluminum brazing agent to remove the oxide film, moisture absorption flux residues form an electrolyte constituting the strong corrosive; aluminum, copper atoms diffuse faster, easier plastic Hydraulic adaptersconnector in the package forming fusible eutectic brittle, leading to joint strength is low, and the electrode potential than the electrode potential is high, prone to intergranular corrosion. Thus, aluminum and copper is generally believed that direct brazing is difficult. In order to prevent oxidation of solder joints, preferably in an inert atmosphere, the production of furnace, heating by hydraulic hose fittingresistance heating or flame brazing.
In order to avoid the formation of aluminum and copper brittle compounds, aluminum and copper atoms necessary to avoid direct contact, and to avoid corrosive flux caused by corrosion problems, can be coated on the surface layer of metal (such as nickel), and then with Brazed , to avoid the formation of aluminum and copper brittle compound, but also can be used corrosive or non-corrosive flux, thus increasing the joint strength and corrosion resistance.

Pack plastic hose connector installation and application

Plastic coated metal hose is mainly used for the production, processing cable protection. Because plastic coated metal hydraulic hose assemblys with light weight, good flexibility and strength of the connection accessories, electrical properties and oil, splash water and other features, so often widely used in electric power, chemical industry, metallurgy, light industry, machinery and other industries. hydraulic hose fittings plastic bag purpose is to protect the wire and cable and insulation, waterproof, can increase the cable bend beautiful.Although compressible metal hose can stretch, but if you do not install the correct position, it will soon break, reduce the service life. Hose plastic bag selection, reference should be corrosion hose material machines and corrugated plastic coated metal hose DN, use, the first cable wires through the pipes, matched with the corresponding model DPJ type connector that available.

Selection of high-pressure hose assembly

Hose sheathing installed in the main hydraulic hose, wire, cable and other products outside. Its function is reinforced hydraulic hose, wire, cable and other interior products, wear-resistant, antistatic properties, in a variety of harsh environments such as inside of Jic hydraulic fittings hose products play a security role.hydraulic fittings, wire, cable and other product installation screw protective cover not only improve the aesthetics, but also can extend the life of the product inside. Retaining spring with traditional metal products, rubber hose protector easy to install and better wear resistance; anti-aging, corrosion resistance strong; more powerful hydraulic hoses, wires, cables and other products for anti-aging and anti-surface friction protection; has more excellent, more convenient, more environmentally friendly energy-saving effect.

Card sets of pipe joints assembly

( A ) . Preloaded ① fittings fittings fittings fittings of the most important aspects of pre-installed , directly affects the reliability of the seal . Generally require a dedicated preheater . Small diameter connector can be pre-installed in a vise . In practice, with a connector as the parent , the nut , ferrule onto the tube can be pressed . There are card sets straight couplings , sleeve type end through turn heads, ferrule tube fittings and other types . I found that even in the same factory shipment , these types of connector body tapered hole depth is often not the same , the result is caused by a leak , and this problem is often overlooked. The correct approach is , the pipe end what kind of connector body connection ,Jic hydraulic fittingscorresponding connection terminal is preloaded with the same type of connector , so to avoid possible leakage problems . ② pipe end should be flush . After sawing the pipe should be flush grinding wheel and hydraulic hose assemblystools , and deburring , cleaning with high-pressure air to blow before use. ③ pre-installed , you should try to keep the tube and the coaxial connector body , if the pipe deflection is too large will cause seal failure. ④ preloaded force should not be too large so that the ferrule tube embedded in the outer wall just inside the edge , card sets shall have no deformation . During pipeline connection, then the provisions of the tightening force assembled . ф6-1 card sets tightening force is 64-1 15n, 16фmmr 259n, ф18mm for 450n. If the pre- deformed when the card holder will lose the seal.
( Two ) . Prohibit adding sealant filler. It was sealed in order to achieve better results, ferrules, apply sealant , sealant was the result into the hydraulic system , hydraulic tube fittings components causing blockage damping hole fault .
( III). Connecting pipe should be sufficient deformation of the tube margin , to prevent the tube subjected to tensile strength .
( Four ) . Connecting pipe should avoid subjecting it to lateral forces , lateral forces caused Mifengbuyan over the General Assembly .
( Five ) . Connecting pipe should be a good one , to avoid multiple disassemble , otherwise it will seal performance deteriorated.

Fittings prevention and installation methods

Fittings prevention and installation methods In the hydraulic system , both the metal pipe fitting , or hose fittings , there are prone to leakage problems . For fittings fittings fittings fittings, mostly due to pipeline subject to greater external force or impact force, the card sets loose or deformed face caused by leaking pipe , you should check whether the card holder out of round , edge whether the defect , Hydraulic pipe fittings end is intact and nut, compression level , etc., while also eliminating pipeline force. For flared fittings, mostly due to excessive flaring , quality, undesirable or multiple demolition , resulting in flared cracks or deformation caused by leaks , then you can be re- flared front truncated . If you use a malehydraulic hoses and female cone top pressure seal , the leakage is mostly due to two cone damage, available on the cone abrasive grit grinding . In some with "о" or outer -ring face seal by the occasion , the leakage following reasons : "о" ring aging or deformation caused by leakage ; "о" ring assembly is not in place , so that the two plane connection when pressure is uneven or "о" ring is cut resulting in leakage.

Flared fittings Appearance process

Appearance of the product is also very important, flared fittings, too. Rough coarse hair hose during use is bring a lot of inconvenience, such as glitches, injured his hand how to do, affecting the appearance of the new factory, the customer that the product is not worth the price of how to do, export expansion pipe joints products, foreign clients do not recognize how to do, there will be many complicated problems. Therefore, we should pay attention to the appearance of products, customers see first is the appearance, so we handle flared fittings appearance.hydraulic fittings appearance processing recommendations are as follows:
1, the hoses in polishing, painting problems when handling.
2, tube hydraulic flanges hinge bolt final polishing, pickling, etc.
3, hydraulic flange welding process technical problems.
4, stainless steel hose problems during the packaging process.
5, and other related operations scratching and so on.

Welded pipe joints for oil pipeline system for the medium

Welded pipe joints Uses and characteristics junction 1 . Welded pipe joints Uses: Welded pipe joints for oil as the medium of piping systems, piping systems for water and air pressure are also used . Working pressure of less than or equal 32Mpa.2. Hydraulic pipe fittings : welded pipe joints has a simple structure , easy to manufacture , sealing , etc., but when installing large welding , welding quality requirements .3 . welded pipe joints structure: welded pipe joints which consists of fitting body nuts and takeover components. took over the joint between the body and the O- ring seal when screwed into the body when the connector body , metric fine thread and cone pattern. and the use of combined sealing gaskets. takeover pipes and piping systems welding hydraulic fittings manufacturing standards 1 , for fluid power and general use metal fittings O-ring hydraulic tube fittings 2 plane , cone seal welded straight couplings 3 , cone seal welded through 55 ° non- sealed tube threaded pipe joint 4 , cone seal welded through 55 ° sealing pipe thread fittings 5 , cone seal welded through 60 ° sealing pipe thread fittings 6 , 90 ° cone seal welded elbow

Metal hose is an important engineering technology connecting member

Metal hose is an important engineering technology connecting member by corrugated flexible tube , a combination of nets and fittings . In a variety of gas, fluid piping systems as well as length, temperature , position and angle compensation systems as compensation components, sealing elements , connecting elements and a damping element , used in aerospace , petrochemical , mining , electronic, mechanical shipbuilding, medical health , textile electronics, energy and construction fields.Austenitic stainless steel Hydraulic pipe fittingsmaterial or materials required by the user , with excellent flexibility, corrosion resistance, high temperature resistance (-235 ℃ ~ +450 ℃), high pressure resistance ( up to 32MPa), the tube path can be connected in any direction , for temperature compensation, and absorb vibration and reduce noise , change the medium conveying direction , remove pipe or between pipes and the mechanical displacement devices , double flange metal corrugated hose to a displacement , vibration a variety of pumps, valves and other flexible joints is particularly applicable.
Hose metal hose is installed in the pressure line of the main pressure parts , while the bellows from the sheath effect, according to the size of pipeline pressure and locations , you can select one or more layers of stainless steel wire or steel for weaving, dawn brand hose pressure range is generally PN0.6-32.0Mpa. Up to 42.0MPa. The production of the main part of the material hose is the use of austenitic stainless steel , thus ensuring the hose excellent in heat resistance and corrosion resistance of the hose very wide temperature range , is -196-600 degrees to hose by pipelines through the media choose to apply corrosive stainless steel grades, the corrosion resistance of the hose can be guaranteed . Corrugated metal Hydraulic hose fittings good flexibility, fatigue resistance, high pressure, high temperature resistance, corrosion resistance , and many other features, it is relative to other hoses ( rubber, plastic hose ) much higher lifetime would therefore it also has a high overall economic efficiency . With the development of modern industry , for high temperature, high pressure hose corrugated metal demand is also getting bigger . Hose Scope: need fully flexible pipes, to prevent vibration premises piping for steam, gas , air, heavy oil, petroleum, chemical -pharmaceutical etc apply.

Stainless steel mesh cover is a metal braided hoses installed in the pressure line of the main pressure parts

Metal hose connectors at both ends : Connector includes threaded connection, flange connection, quick connector , metal hose three main functions : to reduce the stress of the pipe installation , compensating pipe nominal position to absorb the vibration of piping system .Stainless steel mesh cover is a metal Hydraulic hose fittings braided hoses installed in the pressure line of the main pressure parts , while the protective effect of the metal hose , the pressure in the pipe size and locations , you can select one or more layers of stainless steel wire or steel band performed according to certain parameters is woven to form a high pressure metal hose, I produced the metal braided hose pressure range usually ask PN0.6-32.0MPa, up to 42.0MPa. Stainless steel mesh nets are set with steel nets two types.

Plastic coated metal hose Major parts of the austenitic stainless steel

Plastic coated metal hose Major parts of the austenitic stainless steel , thus ensuring a plastic coated metal hose excellent heat resistance and corrosion resistance, plastic coated metal hose operating temperature range greatly , as -196-600 ℃, in actual use , according to corrosive media channels to select the appropriate grade of stainless steel , plastic coated metal hose to ensure corrosion resistanceAnnular corrugated plastic coated metal hose was closed annular tubular housing by the ring Hydraulic pipe fittings between waves and wave ripples in series. Annular plastic coated metal hose made seamless pipe or welded pipe forming process . Constrained by the processing methods , compared with spiral corrugated pipe, its single- tube length is usually shorter . Plastic coated metal hose is made of very thin-walled stainless steel seamless or welded congregation plastic coated metal hose through high-precision plastic processing forming . As plastic coated metal tube determines the elastic properties of the silhouette hose has good flexibility and fatigue resistance , making it very easy to absorb deformation of the cyclic loading a variety of sports , particularly in the piping system has the ability to compensate for a large amount of displacement .

Prevent the above scenario is this: do not easily loosen or tighten the nut, under

Pipe handling: insert fittings pipe surface should be smooth part intact, avoid scratches and other defects. As shown in the bottom of the tube surface is scratched, the sealing joints affected. To end the tube axis perpendicular to the tube, the tube mouth without glitches. If you want to bend the pipe, the pipe ends to set aside a certain length, see below L value, connector manufacturers to follow the advice given value, otherwise it will affect the pipe insertion and sealing. Note Hydraulic pipe fittings matching size and pipe size. If OD3/8inch and OD 10mm pipe, diameter close, but not with OD10mm OD3/8inch the tube connector, and vice versa is also true. Manufacturers usually in metric fittings made ​​a mark, the installation should pay attention to distinguish.

DGJ hose fittings from solid metal structure and characteristics

DGJ hose fittings from solid metal structure and characteristics:
DGJ from the solid metal hose connector, can no threaded pipe or non-threaded device outlet with hose connection, save the threading process; metal Hydraulic pipe fittings made ​​of zinc alloy die-casting, zinc plated, frosted, or chrome; compact structure, high strength. Steel and metal hose connection, reliable, attractive appearance; This is self-fixed metal joints, metal hose is used to connect to non-threaded or non-threaded pipe outlet on the device; adaptation metal hose: JS-type, JSH type, JSB type, JSHG type; adapter tube: thin steel wire tube, black, galvanized iron pipes (water, gas pipes); selection DGJ from solid metal hose connector hose pipe connection, please note that the specifications, dimensions. (4) 90 degree bend connector: Thread Size: inch thread (G) Material: A, C, F parts are made of high quality steel. D is made ​​of die-cast metal. Color: Metallic (Silver) Operating Temperature: -40 C to 100 C, instant heat-resistant up to 120 C. Product Features:
1, after bonding and cabinet 90 degrees, thick zinc alloy, beautiful appearance, compact structure and high strength. 2, except for the following standard specifications, it may change according to needs of any size and thread standards. (5) 45 degree bend connector: Thread Size: inch thread (G) Material: A, C, F parts are made of high quality steel. D is made ​​of die-cast metal. Color: Metallic (Silver) Operating Temperature: -40 C to 100 C, instant heat-resistant up to 120 C. Product Features:
1, after bonding and cabinet at 45 degrees, thick zinc alloy, beautiful appearance, compact structure, Y-shaped metal hose tee

Metal hose Application Performance

Closed metal hose has high acid and alkali, high temperature, flexible bend freely and specifications are complete, easy to install, maintenance free, long life characteristics. Applicable to any environment, various types of metal cutting machinery and equipment are applicable. Corrugated metal pipe is a modern industrial pipeline a high quality flexible connecting tube. It mainly consists of metal bellows, metal mesh and various different forms of joint components. It is a spiral-shaped corrugated inner tube or annular corrugated thin-walled stainless steel bellows, bellows outer sleeve made ​​of stainless steel wire mesh or stainless steel Hydraulic pipe fittings to certain parameters. Hose connectors at both ends of piping or equipment in accordance with the user's joint form prepared.Corrugated metal hose has good flexibility, fatigue resistance, high temperature resistance, corrosion resistance, and many other excellent features, it is relative to other types of hose (rubber hose, plastic hose) lifetime is much higher, with the the development of modern industry, resistant to high temperature, high pressure, corrosion-resistant corrugated metal hose is increasingly widely used. Gas stove with gas vent pipe connections, use that is resistant to corrosion, oxidation of the metal hose. Metal hose with threaded connection as long as the stove is connected, you can use the seal will not install due to human causes leaks, and ease of installation.

Reinforced metal hose production process

Reinforced metal hose: hose housing and disposed therein end portions of the rubber tube is placed between the fastening with three metal sleeve, and the inner flange and the cap casing the outer layer and the intermediate metal valgus sleeve edge clamped together. Connections are secure, using the process will not fall off the hose casing and production installation convenient and simple. Hose casing and placed in one of the rubber tube, rubber tube ends and the ends of the socket with union nut connection gap with metal cap sleeves, middle and outer metal sleeve placed between the metal sleeve. Metal bellows, welded bellows end of the band tapered Hydraulic pipe fittings, characterized in that the bellows other end a and its connected as one of the light pipe, the light pipe sleeve with nuts, inside a the light tube is connected to the one of the convex ring, which has a convex outer ring gasket. Using a local one structure, only the use of a weld, the weld to reduce its impact, reducing the chance of leakage of gas, to improve the safety of use.

Overview of the hose

Hose mainly divided into: stainless steel hose, metal hose, corrugated hose, plastic hoseCorrosion resistance of stainless steel hose depends on the chromium content, if the amount of chromium added to 10.5%, the atmospheric corrosion resistance of steel significantly increased, but the higher chromium content, while still being improved corrosion resistance, but obvious. The reason is of steel with a chromium alloying Hydraulic tube fittings, the change in the type of surface oxide became similar to pure chromium metal oxide formed on the surface.This tight adhesion of chromium-rich oxide protective surface to prevent further oxidation of this thin oxide layer, through which you can see the surface of the natural luster of stainless steel, the stainless steel has a unique surface. Moreover, if the surface is damaged, the exposed steel surface and atmospheric reactions will self repair, re-formation of this kind of "passive film" and continue to play a protective role.