Shanghai Daoqin Plastics Co., Ltd.

         mold manufacturing in need attention/notes very more issues, if is very it process/workflow and key/critical 点, that need more more lower Knowledge.

        1) mold manufacturing selection mold what is most important and most tool has property factors?

         formed methods - can from types basic material type type in selection.

        A) hot processing tool 钢, it can 承受模铸, and pressure versus for high temperature degree.

        B) cold processing tool 钢, it used for lower material and 剪切, cold formed 形, cold pressure, cold and powder add pressure formed 形.

         plastics -一 plastics generate property product, 例如PVC plastics. long time 停工引起 cold 凝, property gas 体, acid, cooling / add hot, water or conditions and other factors generate 腐蚀. in this lower, recommendation use 不锈钢材 material mold 钢.

         mold dimensions - large dimensions mold use hard 钢. overall hard 钢常常 used for small dimensions mold.

         mold use 次数 - long use (> 1 000 000次) mold use high hardness 钢, its hardness is 48-65 HRC. in and other long time use (100 000 to 1 000 000次) mold use hard 钢, its hardness is 30-45 HRC. short time use (surface coarse degree - many plastics mold manufacturing for good surface coarse degree 感兴趣. add improvement metal property can 时, surface quality therefore decline. content high 钢也变 more 脆.

        2) effect/influence material can property need factors is what?

        钢 chemical formed separation very important. alloy formed separation high, difficult processing. carbon content increase 时, metal property can decline. structure for metal property can non important. different structure 包括: 锻造, 铸造, pressure, made and already processing. parts and parts has non difficult processing surface.

         hardness is effect/influence metal property can important factors. generally is hard, difficult processing. high speed 钢(HSS) can used for processing hardness most high is 330-400 HB material; high speed 钢+ titanium nitrogen (TiN) coating, can processing hardness most high is 45 HRC material; for/regarding hardness is 65-70 HRC material, must use hard alloy, 陶瓷, metal and nitrogen 化硼(CBN).

         non metal generally for tool lifespan has defect effect/influence. 例如Al2O3 (oxidation aluminum), it is pure 陶瓷, has very strong/high abrasion property.

         most rear is residual stress, it can metal property can issues. recommendation in coarse processing rear 进行应 force 释放工序.

        3) mold manufacturing production cost which separation formed?

         coarse 略 说, cost distribution 情况如 lower:

        切削 65%

        工 parts material 20%

         hot 处理 5%

         assembly / adjustment 10%

         this non 常清楚 table/sheet 明 良 good metal property can and excellent 良 总体切削 solutions for mold production important property.