Chain Co., Ltd. Zhejiang and Zhejiang in the heat treatment furnace into operation process: mold material identification → differentiate materials, chain manufacturers, hardness be marked → feeding into the furnace frame loading → → Preferences → check the link parameters, chain price, switch whether it is normal to start the Roots pump → → Start vacuum degree after the heating process requirements pumped heating → heating process is completed quenching (automatic) → Check the mold deformation (straightening) is a mechanical pump vacuum → pumped certain vacuum → Check the hardness → first tempering → Check the amount of deformation, hardness → second tempering → Check the amount of deformation, Jilin chain, some materials mold needs three tempering hardness → → Check → mold heat hardness qualified shipped complete Zhejiang Zhejiang chain Limited punch features: 1. suitable for mass production, is not suitable for single-piece production and processing 2. High efficiency, high utilization of materials with mold 3. It is important to jobs and a pair of mold can only use a product Zhejiang Zhejiang chain sold worldwide (Figure) _ Chain Chain Co., Ltd., Jilin wholesale prices _ provided by Zhejiang Zhejiang chain. Zhejiang Zhejiang chain Limited (www.zjzzlt.com) strong, credible, Jinhua in Zhejiang chain, sprockets and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhejiang and Zhejiang in the chain and you hand in hand into the brilliant, for a better future!