Zhejiang Jingjin Machinery Co.,Ltd. products

We have deeply researched on the barrel and screw for the special engineering plastic,for now much of engineering plastics add the calcium,kaolin,red clay, silica or add Glass fiber, carbon fiber, boron fiber and halogen free plastic to make the original plastic much better to adapt the specific plastic products.On the other hand, it may make the screw and barrel wear and corrosion quickly, In order to solve this problem,we have invented a kind of special alloy powder,whose ingredient contains 25%~50% Wc tungsten carbide.It makes the service life of screw and barrel much more longer than the other kinds of bimetallic screw and barrel.

SKD61, DC53, SKH55 (YXM4 high speed steel), with the overall secondary hardening and tempering process. Particularly suitable for high-wear products processing requirements, to ensure wear resistance, corrosion product needs.

Material selection of high quality steel (38CrMOALA) or chromium-molybdenum alloy steel black cross (SACM645) after quenching and tempering, shaping, forming, grinding, or spray the surface nitride alloy (bimetal), polishing process is refined, with high wear resistance, anti-corrosion advantages.

According to different ingredents and products the screw can be chosen: general type, pin type, barrier type, separation type, and gas-exhausting/vented type, etc.

45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188. The above are standard specifications, we can customize according to customers’ requirements. The compression ratio of screws can be designed according to different products and mixtures.

Diameter: φ45-φ200 （according to customers demands) L/D ratio:16-35. The compression ratio of screw can be designed according to different products and mixtures.

Material:38CrMoAIA. Nitriding treatment. Surface hardness:HV2900. Nitriding depth:0.5-0 .8mm.