**Product Details:** - **Model No.:** Injection Screw Barrel - **Specification:** ISO 9001:2008 - **HS Code:** 84779000 - **Trademark:** Zhongyang - **Origin:** Zhoushan This injection screw barrel is specifically designed for injection molding machinery. It is also known as an injection molding screw cylinder and is widely used in plastic processing equipment. The product includes bimetallic screw barrels, which are ideal for high-performance applications in the plastics industry. **Specifications:** - **Screw Diameter:** Φ 20mm to Φ 220mm - **Mold Clamping Force:** 250T to 3200T - **Shot Weight:** 30g to 30000g **Technical Information:** **Base Materials:** 1. 38CrMoAlA (JIS SACM645) 2. 42CrMo (AISI 4140) 3. 4Cr5MoSiV1 (JIS SKD-61) 4. 9Cr18MOV 5. HPT **Bimetallic Alloy Materials:** 1. Fe-based alloy 2. Ni-based alloy / Deloro alloy 3. Co-based alloy 4. NiCo-based alloy 5. Tungsten carbide / Wolfram carbide **Manufacturing Techniques:** - Heat treatment - High-frequency quenching - Nitriding treatment - Hard-chrome electroplating - Bimetallic alloy welding - Bimetallic alloy centrifugal casting **Key Technical Parameters:** - **Nitrided Layer Depth:** 0.5–0.8 mm - **Nitrided Hardness:** 900–1000 HV - **Nitrided Brittleness:** Less than Grade 1 - **Surface Roughness:** Ra 0.4 µm - **Screw Linearity:** ≤ 0.015 mm - **Hard-Chrome Plating Hardness After Nitriding:** ≥ 950 HV - **Chrome-Plating Layer Depth:** 0.025–0.085 mm - **Bimetallic Layer Depth:** > 3 mm **Warranty & Service:** 1-year warranty We are a professional manufacturer with extensive experience in producing high-quality injection screw barrels. Our products are designed to meet international standards and deliver long-lasting performance. Whether you're looking for standard or custom solutions, we are your reliable partner in the plastics industry. **Material Applications:** - General plastics - ABS, PA, PC, PE, PET, PP, PS, EVA, PU, PVC, U-PVC, etc. - PA + GF (Glass Fiber) - Flame-resistant reinforced plastics - Modified engineering plastics - Various recycled materials (in scrap or granule form), such as PVC + 30% CaCO3 **Table of Technical Parameters for Extruder Machines:** | **Parameter** | **Details** | |-----------------------------|-----------------------------------------------------------------------------| | **Base Material** | 1) 38CrMoAlA (JIS SACM645); 2) Cr12MOV (JIS SKD-11); 3) 4Cr5MoSiV1 (JIS SKD-61); 4) 42CrMo (AISI 4140) | | **Bimetallic Alloy Materials** | 1) Fe-based alloy; 2) Ni-based alloy/Deloro alloy; 3) Co-based alloy; 4) NiCo-based alloy; 5) Tungsten carbide/Wolfram carbide | | **Double-alloy Level** | Level A – Tungsten content 40%; Level B – Tungsten content 25%; Level C – Tungsten content 9.5% | | **Surface Treatment** | Heat treatment, high frequency treatment, nitriding treatment (120 hours), hard chrome plating, nickel alloy plating, bimetallic barrel/cylinder centrifugal casting, bimetallic screw plasma coating, spraying corrosion-resistant dual metal layers | | **Basic Information** | Surface roughness: Ra 0.4 µm; Screw linearity: ≤ 0.015 mm; Linear axis limit: ≤ 0.02 mm; Hardness after hardening and tempering: HB 240–280; Nitration fragility: ≤ Two class | | **Material Application** | General plastics, ABS, PA, PC, PE, PET, PP, PS, EVA, PU, PVC, U-PVC, etc.; PA + GF; Flame-resistant reinforced plastics; Modified engineering plastics; All kinds of mixed recycled materials | Our injection screw barrels are manufactured with precision and durability in mind. We offer competitive pricing, fast delivery, and excellent customer support. Choose us for reliable and high-quality screw barrels that meet your specific production needs.

Low Temp. Levelling Agents For Polyester

Atmospheric pressure dyeing of polyester, wool/polyester, polyester/acrylic, polyester/nylon and other fabrics and yarns.
Swollen polyester fiber, greatly improves the yielding rate of disperse dyestuff at low temperatures; excellent dye migration and high temperature dispersion to prevent dyeing defects, also can be used for correcting and stripping of uneven dyeing.

low temperature, disperse dyes, color yielding, plasticizing and puffing effect, Atmospheric pressure dyeing

Dymatic Chemicals, Inc. , https://www.dymachem.com

August 22, 2025