Spring manufacturers have Guangdong Xulong. Guangdong Xulong spring Foshan factory was founded in 1979, more than 40 years specializing in the manufacture of production of various types of customized springs, spring wire warp 0.1-60mm, with cold-drawn spring steel wire to manufacture compression coil springs, with cold-drawn spring steel wire to manufacture extension coil springs .
Spring production precautions
No support ring spring and wire diameter too thin spring should not be welded head, but the end of the steel wire should not be obvious loose, should be deburred. Where the need to weld the head of the multi-stranded spring, the length of the welding part should be less than 3 times the diameter of the cable (maximum length of not more than 10 mm). Heating length should be less than a circle, after welding should be polished smooth, gas welding welding parts should be localized low temperature annealing.
Support ring according to the product requirements can choose cold and hot and two methods. The use of hot and do not allow the spring heated to sparking or white, silicon manganese steel temperature shall not be higher than 850 ℃. Support circle and effective circle should be effective contact, the gap shall not exceed 10% of the nominal gap between the circle.