{"id":7266,"date":"2025-06-09T17:50:29","date_gmt":"2025-06-09T09:50:29","guid":{"rendered":"https:\/\/rilong-mold.com\/?p=7266"},"modified":"2025-06-09T17:50:30","modified_gmt":"2025-06-09T09:50:30","slug":"our-experiences-in-glass-filled-nylon-injection-molding-and-mold-design-for-long-glass-fiber-high-wear-materials","status":"publish","type":"post","link":"https:\/\/rilong-mold.com\/ar\/our-experiences-in-glass-filled-nylon-injection-molding-and-mold-design-for-long-glass-fiber-high-wear-materials\/","title":{"rendered":"Our experiences in Glass-filled Nylon injection molding and mold design for long glass fiber\/high-wear materials."},"content":{"rendered":"

In the field of engineering plastics, nylon 66 (PA66) with 30% glass fiber (GF) is a widely used high-performance material known for its excellent mechanical strength, heat resistance, and dimensional stability. However, due to its high wear characteristics, mold design and injection molding processes require special attention.<\/p>\n\n\n\n

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PA66 with 35GF<\/figcaption><\/figure>\n\n\n\n
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Characteristics and Challenges of PA66 + 30% GF Material<\/strong><\/p>\n<\/blockquote>\n\n\n\n

The main advantages of PA66+30GF include:<\/p>\n\n\n\n

High Strength & Rigidity: Glass fiber reinforcement significantly increases tensile and bending strength.<\/p>\n\n\n\n

Heat Resistance: Short-term temperature tolerance up to 250\u00b0C, long-term usage temperature between 150-160\u00b0C.<\/p>\n\n\n\n

Dimensional Stability: Glass fiber reduces shrinkage and minimizes deformation risk.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
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However, this material also presents some challenges:<\/strong><\/p>\n<\/blockquote>\n\n\n\n

High Wearability: Glass fiber accelerates mold wear, causing issues such as surface roughening and flash.<\/p>\n\n\n\n

Reduced Fluidity: The presence of 30% GF decreases melt fluidity, affecting filling efficiency.<\/p>\n\n\n\n

Mold Corrosion: PA66 itself has acidic properties, and glass fiber further exacerbates mold corrosion.<\/p>\n\n\n\n

The following brands of nylon and glass-filled nylon materials we worked are:<\/p>\n\n\n\n

Zytel\u00aePA66 70G30HSLR<\/p>\n\n\n\n

Ultramid\u00ae PA66 A3EG6<\/p>\n\n\n\n

Amilan\u2122PA66 CM3004G-30<\/p>\n\n\n\n

Ascend Vydyne\u00ae R530H<\/p>\n\n\n\n

DSM-K-FKGS6_B PA6-GF30 FR(17)<\/p>\n\n\n\n

The table below displays the performance characteristics of glass-filled polyamide composites (Nylon 66 with 30% glass fibers).<\/p>\n\n\n\n

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Nylon 66 with 30% glass fibers<\/figcaption><\/figure>\n\n\n\n
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Mold DFM<\/figcaption><\/figure>\n\n\n\n
\n

Key Points in Mold Design for High-Wear Materials<\/strong><\/p>\n<\/blockquote>\n\n\n\n

(1) Selection of Mold Steel<\/strong><\/p>\n\n\n\n

Corrosion Resistance & High Hardness: Recommended mold steels include 2316, 420\uff0c2083, SKD61 for corrosion resistance.<\/p>\n\n\n\n

Heat Treatment Requirements: A hardness of HRC 52+ can reduce wear, but long-term use still requires optimized surface treatment (such as chrome plating or nitriding).<\/p>\n\n\n\n

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Injection mold<\/figcaption><\/figure>\n\n\n\n

(2) Optimization of Runner and Gate Design<\/strong><\/p>\n\n\n\n

Avoid Sharp Corners: Reduce glass fiber erosion on the mold.<\/p>\n\n\n\n

Multiple Gates: Minimize warpage caused by fiber orientation (using three gates can reduce warpage by 56%).<\/p>\n\n\n\n

(3) Reinforcement of Ejection System<\/p>\n\n\n\n

Due to the high demolding force of PA66+30GF, more ejector pins or hydraulic ejection systems should be used.<\/p>\n\n\n\n

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PA6+GF30 over-molded with diecasting part Front<\/figcaption><\/figure>\n\n\n\n

3. Optimization of Injection Molding Process<\/strong><\/p>\n\n\n\n

Melt Temperature: 280-300\u00b0C to ensure proper dispersion of glass fibers.<\/p>\n\n\n\n

Mold Temperature: 80-120\u00b0C to reduce internal stress.<\/p>\n\n\n\n

Hold Pressure: Increase appropriately to minimize shrinkage, but too high may cause flash.<\/p>\n\n\n\n

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Injection molding of Nylon product<\/figcaption><\/figure>\n\n\n\n

4. Special Considerations for Long Glass Fiber Reinforced Materials (LFT)<\/strong><\/p>\n\n\n\n

Long glass fibers (>5mm) provide higher impact strength but have lower fluidity, requiring careful mold design:<\/p>\n\n\n\n

Prevent Fiber Breakage: Use low-shear runner designs.<\/p>\n\n\n\n

Mold Surface Polishing: Reduce fiber abrasion on the cavity.<\/p>\n\n\n\n

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high impact resistance GF filled Nylon injection molding<\/figcaption><\/figure>\n\n\n\n

<\/p>","protected":false},"excerpt":{"rendered":"

In the field of engineering plastics, nylon 66 (PA66) with 30% glass fiber (GF) is a widely used high-performance material known for its excellent mechanical strength, heat resistance, and dimensional stability. However, due to its high wear characteristics, mold design and injection molding processes require special attention. Characteristics and Challenges of PA66 + 30% GF […]<\/p>\n","protected":false},"author":4,"featured_media":7268,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","kk_blocks_editor_width":"","_kiokenblocks_attr":"","_kiokenblocks_dimensions":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-7266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/posts\/7266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/comments?post=7266"}],"version-history":[{"count":0,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/posts\/7266\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/media\/7268"}],"wp:attachment":[{"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/media?parent=7266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/categories?post=7266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rilong-mold.com\/ar\/wp-json\/wp\/v2\/tags?post=7266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}