News

Jinjun Metal Delivers One‑stop Solutions for Mold Steel & Automatic Equipment

Against the backdrop of growing demands for cost reduction and efficiency improvement in manufacturing, suppliers providing merely steel materials or machinery can hardly resolve real‑world production pain points for factories. With over ten years of industry experience, Foshan Jinjun Metal Materials Co., Ltd. (operating under the brand Taiyuan Mold Steel) adopts a dual‑driven business model of mold steel plus automatic equipment, delivering integrated industrial solutions for manufacturers. The tool steel division supplies cold‑work mold steel, hot‑work mold steel, plastic mold steel, powder high‑speed steel and various forgings. It provides material selection, cutting processing and supporting heat‑treatment technical support. Professional material matching is available for cold extrusion, stamping, die‑casting and plastic molding applications. Blind material selection is avoided to mitigate common failures such as die chipping and premature wear, so as to extend die service life. Its automation equipment division independently develops and manufactures full‑set cold roll‑forming lines including keel machines, guide rail machines, air duct machines, tube welding machines and storage rack machines. Complete units cover feeding, guiding, main forming, straightening, hydraulic punching and cutting. Custom‑built machinery and equipment retrofitting services are offered, with products sold worldwide. Different from ordinary traders, Jinjun Metal builds a full‑value chain covering material selection, heat treatment, forming machinery and after‑sales technical service. Customers do not need to communicate separately with steel suppliers and machinery manufacturers. Mold failure and equipment commissioning issues can be solved in one stop. Going forward, Jinjun Metal will keep deepening both material and machinery sectors and keep delivering practical solutions for local manufacturing industries. New and existing customers are welcome for inquiry and sample evaluation to discuss production optimization.

2026-03-10
More

Key Points for Roll Die Material Selection of Cold Roll‑forming Lines for Keel Machines

Cold roll‑forming equipment such as keel machines, guide‑rail machines, rack machines and air‑duct machines produce profiles by continuous rolling of metal strips. The material quality of forming rolls directly determines profile accuracy, surface finish and overall maintenance cost of production lines. Many manufacturers suffer from rapid roll wear, workpiece surface scratching and roll chipping, which are largely caused by improper die steel selection and inadequate heat‑treatment processes. Drawing from rich practical experience serving cold‑roll‑forming manufacturers, Foshan Jinjun Metal shares practical suggestions for roll die material selection: 1. For galvanized sheets, thin‑gauge keel and guide‑rail profiles: Cr12MoV cold‑work mold steel is highly recommended. With vacuum quenching and tempering to hardness HRC60‑62, it balances wear resistance and toughness and remains a proven mainstream option. 2. For thick plates, stainless‑steel profiles and high‑strength storage‑rack components: Under heavy impact and friction conditions, high‑toughness grades such as LD and 6W6 are preferred to resist chipping and extend overhaul intervals of forming rolls. 3. For mass‑scale non‑stop continuous production: Powder metallurgy high‑speed steel can be adopted to further improve wear resistance and reduce roll‑replacement downtime. Besides steel grade selection, heat‑treatment plays a decisive role. Even for identical steel grades, different heat‑treatment procedures may result in several‑fold differences in service life. Complete quenching, tempering and stress‑relief processes are required to minimize deformation and cracking risks. Jinjun Metal supplies a full range of cold‑work mold steel as well as complete cold roll‑forming lines. We provide combined “machinery + roll‑die material” packages to help cold‑forming processors cut consumable costs and improve production‑line stability.

2026-03-10
More

Comprehensive Introduction to Cold-work Mold Steel: Working Conditions, Grades & Common Failures

Cold-work mold steel serves as the core material for metal forming at room temperature. Many misunderstand the term “cold-work” as working under low temperature. In fact, it means the mold performs stamping, cold extrusion, cold rolling and blanking at ambient temperature. During operation, the mold bears heavy compressive force, friction and cyclic impact loads. Foshan Jinjun Metal (Taiyuan Mold Steel) shares professional knowledge of cold-work mold steel, assisting manufacturing engineers to select proper materials and prevent premature mold failure. Core Performance Requirements of Cold-work Mold Steel 1. High wear resistance: Resist continuous metal friction to keep stable workpiece dimension and prevent rapid cavity or cutting-edge wear. 2. Good toughness: Absorb impact force to avoid chipping, edge breaking and cracking. 3. Excellent hardenability: Ensure uniform hardness throughout thick molds after heat treatment and minimize deformation. 4. High compressive strength: Resist heavy extrusion load and prevent cavity collapse and plastic deformation. Main Grades & Typical Applications Cr12MoV / SKD11 (D2): Classic high-carbon high-chromium cold-work steel with great wear resistance and dimensional stability. Suitable for sheet stamping, cold forming rolls, forming rollers for keel & rack machines, and heavy-gauge blanking dies. DC53: Improved grade based on SKD11 with better toughness and lower cracking risk after heat treatment. Widely used in precision blanking, stainless steel stamping and cold extrusion dies. LD, 6W6: High-toughness cold-work steel with outstanding impact resistance, ideal for heavy-load cold extrusion punches and thick-plate cutting dies prone to chipping. Powder metallurgy high-speed steel: Ultra-high wear resistance paired with good toughness. For mass continuous production and forming of high-strength stainless steel & hard alloys. Three Major Failure Modes of Cold-work Dies 1. Wear failure: The most frequent issue. Gradual edge wear causes excessive burrs and out-of-tolerance workpiece dimensions. 2. Chipping: Insufficient toughness or excessively high hardness leads to edge fracture under impact. 3. Cracking & deformation: Caused by low steel purity or improper heat treatment, resulting in cracks and shape distortion. Reminder: Material selection for cold-work dies should not simply pursue maximum hardness. For mass production and heavy impact conditions, it is critical to balance **wear resistance and toughness**. Even for the same steel grade, heat treatment largely determines actual die service life. Jinjun Metal supplies a full range of cold-work mold steel with sawing, precision grinding and heat-treatment technical support. We also provide cold roll-forming equipment including keel machines and guide rail machines. Customized material solutions are available for cold extrusion, stamping and forming roll applications to reduce mold consumption and improve overall production efficiency. New and existing customers are welcome for inquiries and sample testing.

2026-10-20
More
1

© Copyright 2026 Foshan Jinjun Metal Materials Co., Ltd
All Rights reserved.

Follow us for more practical tips and industry trends.

© Copyright 2026 Foshan Jinjun Metal Materials Co., Ltd All Rights reserved.

Technical Support: CEALL