Alloy Steel Screw[SKH59][SKH55][SKH51]
| Item | category | Processing ranges | Processing technology | Alloy composition | Hardness inde | Adhesion inde | straightness | roughness | Alloys nameplate | Notes of production |
| SKD61 alloy steel screw | Import alloy steel screw | Diameter 18mm-80mm | Hardening And tempering.vacuum hardening,Hard treatment. | HITACHI high speed steel,Datong High speed steel | HRC>55-58 | Whole smelting | 0.015mm/m | Ra0.4um | Japan HITACHI,Japan Datong | Used in Engineering Plastic with 40% defibrase |
Product introduction Importing material from Japan Datong,Hitachi,Nachi,high speed tool steel company,to guarantee the quality.Processing:the diameter of basicmaterial will be larger 1mm than the outmeter of required screw.Through the vaccum quenching treatment,temperature of 1020 degrees,heat preservation time is 1H,the high temperature tempering temperature is 500 degrees-530 degrees,the hardness is about HRC63,then molded after the CNC grinder disposable.Advantages:hard to deform,small internal stress,high precision,good appearance.Application of plastic:LCP,PBT,PET,PPC,PPS,PAR,adding glass fiber,or with other additives,such as powder,ceramic powder,aluminum powder,iron powder and other engineering plastics.
