OEM Flat Washer,wholesale EPDM washer,wholesale stainless steel washer

Disc springs, also known as tension elastic washers, was invented by the French Belleville. The standard of dished washer is (German standard din6796) (national standard jbzq4010) (HS high tension Series)

Belleville washers are designed to prevent loose connections between bolts and screws.

The large support load and good elastic recovery make the dished washer very effective in preventing looseness of low-frequency vibration. The bolt tension can withstand looseness due to the following reasons: wear, creep, relaxation, thermal expansion, contraction of vulnerable parts, or compression of seals. Din6796 German standard dish washer increases the elastic tension of screw several times. It can effectively replace the ordinary spring washer, but it is not suitable for the combination of lock washer and flat washer.

Din6796 dishwasher is only used for fastening and connection locking with matching screws. The thickness of the standard specification will produce strong load tension, so it can only be used in one piece. The ideal installation method is to flatten as much as possible. The closer to the flattening state, the faster the tension torque increases. The proper bolt tension can be obtained without a torque wrench. Can completely replace the traditional spring washer!

1. common application sites are made of s60c elastic steel, which can bear 120 ℃

1. Special temperature resistance range: 51crav4 disc pad -200~300 ℃

1. features a) the preload changes repeatedly due to thermal expansion and cold contraction. The high-temperature disc gasket has a super compensation function to compensate the preload changes repeatedly due to thermal expansion and cold contraction, so as to keep the preload stable and prevent bolt fatigue and gasket failure. b) The change of preload caused by the change of medium pressure the high-temperature disc spring can compensate the change of preload caused by the change of medium pressure and prevent the failure of bolts and gaskets. c) The preload changes due to mechanical vibration. The high tension Belleville washer can effectively absorb mechanical vibration, avoid bolt loosening due to mechanical vibration, and ensure lasting and reliable sealing.

1. material: special alloy steel 51crav4 imported from Germany! Working scene of special high temperature equipment.

1. application equipment a) pipeline flange, high pressure valve, etc; b) Pre tighten the flanges and foundation bolts of pumps, fans and centrifuges; c) High voltage switch and high temperature heater of the power plant; d) Petrochemical heat exchanger, reactor, etc; e) Electric furnace, rolling mill, flying shear, etc!

1. surface treatment: the strength grade of high tension washer. According to international specifications, high-strength materials are highly sensitive to electroplating and pickling, which is easy to cause hydrogen embrittlement and fracture risk. Other chemical surface treatments need to consider potential risks! Improper material selection and wrong surface treatment increase the risk of manufacturing process of dished washer. Even good heat treatment cannot guarantee the safety performance of the product. Unprofessional will bring very uncertain losses to users!

We are a OEM Flat Washer,wholesale EPDM washer,wholesale stainless steel washer, our products satisfy our customers. And we want to be your long-term partner, any interests, welcome to contact us.