stainless steel screw
stainless steel screw
stainless steel screw

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stainless steel screw

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Model No. :
Brand Name : JINMAO
9yrs

Zhoushan, Zhejiang, China

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Product description

stainless steel screw(original Hatachi HPM38,S136,SUS440,9cr18mov and other imported stainless steel)

 Item

 category

 Processing ranges

 Processing technology

 Alloy composition

 Hardness inde

 Adhesion inde

 straightness

 roughness

 Alloys nameplate

 Notes of production

 HPM38,S136,SUS440,9cr18mov,etc import stainless steel

 Stainless screw

 Diameter 18mm-80mm

 vacuum hardening,CNC Circular grinding 

one-time processing control

 HITACHI high speed steel,Datong High speed steel

 HRC50-55

 Whole smelting

 0.015mm/m

 Ra0.4um

 Japan HITACHI,Japan Datong

 Used in optical glasses,LGF,transparent.

  Product introduction Raw materials used in Hitachi HPM38,S136,SUS440,9cr18mov,and other imported stainless steel.-applicable to the optical lens,LGF,a transparent molding and other products.PC,PMMA,ABS,U-PVC transparent products and PP fire resistandance and other corrosive plastics. Simple introduction of PC special screw. 1.non crystalline plastics,no obvious melting point,glass transition temperature of 140 DEG C to-160 degrees C,melting temperature 215-225 DEG C,molding temperature 230 to 320 DEG c.
2.viscosity,high processing temperature,narrow range,easy to decompose,selection of screw to avoid overheating phenomenon.
3.sensitive to moisture,high temperature resin hydrolysis,drying temperature of 120 degrees-130 degrees C,time 4 hours.
Parameter selection 1.L/D:As its good thermal stability,viscosity properties,to choose big L/D ratio to improve plasticizing effect.
2.Due to its wide melting temperature range,long feeding section,short,the moderate compression ratio is moderate,for improving  plasticizing effect,barrier type plastic head can be chose.
3.if the flame retardant or glass fiber reinforced PC material,it will be good to choose stainless steel tool screw to resist corrosion and wear.  
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