Imitation
reactive printing with pigment on various cotton or polyester fabrics.
Printed fabric surface is
smooth and soft, not sticky; good color fastness, good cost performance, does
not contain APEO, low formaldehyde emission.
Pigment
printing on cellulose fibers and their blends.
Binders,Printing Binder,Formaldehyde-Free Printing Binder,Low-Formaldehyde Pigment Printing Binder,Pigment Printing Binder Dymatic Chemicals, Inc. , https://www.dymachem.com
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Injection screw barrels, injection molding screw cylinders, and bimetallic screw barrels are essential components for plastic injection molding machines. These parts are designed to ensure high performance, durability, and precision in the manufacturing process.
**Specifications:**
- **Screw Diameter:** Φ 20mm – Φ 220mm
- **Mold Clamping Force:** 250T – 3200T
- **Shot Weight:** 30g – 30000g
**Technical Details:**
**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
**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
As an experienced manufacturer, we specialize in producing high-quality injection screw barrels that meet international standards. Our products are widely used in various industries, including plastics, automotive, and packaging. With a focus on innovation and quality, we provide reliable solutions tailored to your needs.
**Application Materials:**
- General plastics
- ABS, PA, PC, PE, PET, PP, PS, EVA, PU, PVC, U-PVC
- PA + GF (Glass Fiber)
- Flame-resistant reinforced plastics
- Modified engineering plastics
- Mixed recycled materials (in scrap or granule form), such as PVC + 30% CaCO3
**Surface Treatment Options:**
- Heat treatment
- High-frequency treatment
- Nitriding treatment (120 hours):
- Depth of nitrided layer: 0.5–0.8 mm
- Hardness of nitrided layer: 900–1020 HV (HRC 56°–65°)
- Hard chrome plating:
- Thickness: 0.05–0.10 mm
- Hardness: ≥ 950 HV
- Nickel alloy plating
- Bimetallic barrel/cylinder: Centrifugal casting (inlay alloy)
- Bimetallic screw: Plasma alloy coating spraying
- Bimetallic layer depth: > 2 mm
- Bimetallic layer hardness: HRC 55°–72°
- Spraying corrosion and wear-resisting 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
We offer a wide range of options to suit different applications and requirements. Whether you're looking for standard or custom-made parts, our team is here to support you with professional service and technical expertise. Choose us for long-term partnership and superior product quality.
**Product Information**
August 22, 2025