screw & barrel design for screw element 

Specifications screw & barrel design manufacturer in Zhoushan 1.More than 30 years experience 2.Direct Manufacturer 3.High Quality Material   JinJing Brand  screw&barrel design manufacturer in Zhoushan     Specification                                      Parallel twin screw diameter Φ18-Φ177 Material: 1.  W6Mo5Cr4V2 2.  38CrMoAIA(JIS SACM645) 3.  42CrMo(AISI4140) 4. S45C Technical Treatment: 1. Heat Treatment 2. Nitriding Treatment 3. Vacuum quenching Technical Parameter: D/d ratio:1.55 Nitrided Lay depth: ≥0.4mm Nitrided hardness: 900-100HV       Processing Produce:                        CustomerOrder--ProductDesign(CustomerDrawing)—ProductionFlowArrangement—Material Procurement—Hardening&Tempering—Drilling—RoughTurning—RoughThread Rolling(AlloySprayWelding)—Alignment—FineThreadRolling—Mixing—Alignment—High FrequencyTreatment—Alignment—Polishing—Grinding…