Suzhou Zhaoneng Precision Spring Hardware Co., Ltd.
Address£ºNo. 161, Shilin Road, Suzhou High-tech Zone
Brake hoof return spring is the use of spring tension to brake shoe quickly return to work after the original position to ensure the effect of continuous braking. It is a spring steel wire cold-rolled made of hook-type tensile spring.
The quality requirements of the brake shoe:
Spring material should be ¢ñ, ¢ò group made of carbon spring steel wire wound.
Quenched, tempered cold coil spring, the hardness value in the range of 44-52HRC selected. In special cases, the hardness value can be expanded to 55HRC.
3) appearance quality requirements
Spring surface should be treated with black, steel wire surface should be smooth, does not allow cracks, scale, corrosion and other defects; bend hook must not have scars; cold coil spring depth does not allow more than half of the material diameter tolerance individual indentation , Pits and scratches.
4) The work of the limit load requirements of the tensile spring working limit load is not allowed to have permanent deformation.