2014年8月30日星期六

reusable hose fitting is the body plays a flexible metal hose role

Plays the role of connecting joints; nets play a strengthened role of the shield. For different application requirements,hydraulic machines the way interconnected between them varies: bellows, nets and welded joints in the form of three-part connection, called welding; mechanical clamping form connections, called mechanical clip-on; in addition, there are associated with the above two methods, called hybrid. reusable hose fitting, bellows habit called wave tube in the Americas (Corrugated Tube) or corrugated sac (Corrugated Box), commonly referred to as a metal capsule in Europe (Germany Metallbulgen, England Metal Bellows). This name comes hydraulic pipe crimping machine from the old-fashioned manual operation of blast air bag, in our vulgar call it "Paper Tiger." It is a kind of horizontal corrugated thin cylindrical shell under axial tension or pressure, can elongate or shorten; If you give it a lateral force applied bending moment, you can get the corresponding axial plane displacement....

2014年8月26日星期二

A brief history of the development of reusable hose fitting

Metal hose occupies an extremely important position in modern industry. Well, it is how to develop it?
Initially, people used animal skins sewn into a tubular structure to meet the needs of the production struggles. After a fairly long period of time,reusable hydraulic hose fittings to the seventeenth century leaves, Netherlands Wan? Del cap gold brothers made ​​a longitudinal suture canvas hose, at the time of the fire services are widely used. Later, with the development of rubber in the international market and the emergence of curing industry, hoses and metal wire or twine and other fabrics armored hose come out. However, the project some steam, high temperature hot medium class;reusable hydraulic fittings liquid hydrogen, liquid oxygen, liquid helium cryogenic medium class; gasoline, kerosene, acid, alkali and other corrosive media ...... if the hose to transport, of course not. Especially under high temperature conditions, it's more difficult to ensure the safety and reliability. Therefore, it gradually to focus on the metal pipe, the changes in the geometry of the metallic tube, so that the respective inner and outer corrugated surface. Thus, both have the same flexibility with hose; meanwhile, also has a high temperature resistance, low temperature resistance, aging resistance, corrosion resistance. Thus, as the metal bellows metal hose body thus produced. Structural characteristics of the metal hose: metal hose generally consist bellows, nets and joints of three parts....

2014年8月20日星期三

Metric hose fittings prohibit adding sealant packing

It was sealed in order to achieve better results, put the card coated with sealant, sealant is the result into the hydraulic system, causing clogging damping hydraulic components and other failures. When the connecting pipe, the tube should have sufficient margin deformation,threaded fittings the tube is subjected to tensile force is avoided. When connecting pipe, it should be avoided by lateral force, lateral force caused Mifengbuyan over the General Assembly. When connecting piping, should disposable good, avoid multiple disassemble, otherwise it will seal performance deteriorated.
Card sets of pipe joints installed: metric hose fittings require the need for pickling pipes should be pickled; according to the required length by sawing or special pipe cutting machines and other equipment off the tube, and definitely not with a melting off metric tube fittings or wheel cutting; removing the pipe ends and outside round burr, metal chips and dirt; remove rust agents and dirt pipe joints; while also ensuring tube roundness; nut, ferrule has set into the tube, sleeve front edge (diameter end ) from the tube mouth at least 3mm, then the pipe into the connector body taper, top up to; slowly tighten the nut, turn the tube until it is not moving, then tighten the nut 2/3 to 4/3 laps; open inspection card sets whether to cut the pipe, the location is correct. Card sets are not allowed to move axially, can slightly rotate; re-tighten the nut after passing the examination.

2014年8月13日星期三

parher Hydraulic Hose Fittings classification

Hydraulic hose, high pressure ball valves, intent odd quick connector ferrule pipe fittings, welded pipe fittings, high pressure hose, transition type fittings, bite type fittings,american hose fittings tee pipe fittings, non-standard pipe fittings , flared fittings, angled fittings, rotary tube fittings, quick connectors, stainless steel pipe fittings, copper fittings. Hydraulic fittings and the general differences between the pipe joint of the largest and most significant difference jic flare fittings is that the hydraulic pressure of the hydraulic pipe fittings larger staggering, the hydraulic oil pipe suddenly burst impact force is great. Can not be used to replace ordinary dedicated connector, because the hydraulic pressure is can withstand a lot of ordinary atmospheric pressure up to 0.5 already dying.

2014年8月7日星期四

parher Hydraulic Hose Fittings maintenance instructions

Properly connected to the interface: hydraulic ferrule fittings hose and fittings to be installed properly to ensure that no twisting or torque transmitted to the hose.
External damage: ensure correct installation also includes a hose from tension, lateral pressure, twisted, compressed, may be subject to wear and tear, to avoid thread damage sealing surface damage.
System test: must exclude all installed after the air pressure to the system maximum working pressure, system operation correctly and functioning properly, no leakage at each connection. When the trial staff must stay away from the danger zone.
Finally, the hose fittings, and maintenance instructions. In addition to the proper selection and installation without the ongoing maintenance of the hose life will be significantly reduced.