Dongguan Chengda Machinery Parts Co., Ltd. is located in Dongguan City, the industrially developed Pearl River Delta Region. We are a modern integrated enterprise integrating R&D, production, sales, internal & external cylindrical grinding, vacuum heat treatment, vacuum nitriding and maintenance services for many years.
Our company has an experienced technical team for die casting parts processing as well as a professional sales team, equipped with high-precision production equipment including CNC lathes, automatic lathes, milling machines, internal & external cylindrical grinders, vertical honing machines, wire EDM machines, boring machines, gantry milling machines, vacuum heat treatment furnaces, vacuum nitriding furnaces, quenching furnaces and more. The complete equipment greatly boosts our production capacity, enabling us to efficiently fulfill all customer orders with reliable product quality and punctual delivery schedules.

Products & Business Scope: Die Casting Machine Spare Parts compatible with LK, Haitian, Yizumi, Frech, Buhler, Ube, Toshiba, Toyo, Ryosho, Tenzo, Kogyo, Chenfeng, Weitai, Xinhong, Zhengao, Baoyang and other brands.
• For 125T-12000T Cold-Chamber Aluminum & Magnesium Alloy Die Casting Machines: Shot sleeves, plunger tips, injection rods, connecting joints, release agents;
• For 15T-650T Hot-Chamber Zinc & Magnesium Alloy Die Casting Machines: Goosenecks, nozzle bodies, nozzle tips, piston rings, injection plungers, heating sleeves, heating rings, temperature probes;
• Mold Accessories: Ejector pins, ejector pin sleeves, etc.

Our company owns a complete and scientific quality management system. We have gained wide recognition across the industry for our integrity, comprehensive strength and stable product quality. Customers from all walks of life are sincerely welcome to visit our factory for inspection, technical guidance and business cooperation negotiation.

  http://www.dgcdwj.com/

1. Raw material: ESR H13 steel or SKD61 hot work die steel.
2. Deep hole internal cylindrical grinding is adopted for inner bore machining, finished in one pass without tool joint marks, achieving surface roughness Ra ≤ 0.8μm. Outer cylindrical grinding uses mandrel positioning. The roundness, coaxiality, perpendicularity and other dimensional tolerances of inner bores fully comply with drawing requirements 100%.
3. Heat treatment: Vacuum high-temperature quenching at 1030°C~1050°C followed by three cycles of high-temperature tempering to reach hardness HRC 48~50. Surface treatment: Glow ion nitriding with nitriding layer thickness 0.3~0.50mm, surface hardness HV 900~1050 (equivalent to HRC 62~65). It features high substrate hardness and high surface hardness to prevent inner bore scuffing, with outstanding heat resistance, thermal fatigue resistance and molten metal erosion resistance.