Longkou Dayuan Machinery Parts Co., Ltd
联系方式
Longkou Dayuan Machinery Parts Co., Ltd. is a Sino-South Korea joint venture, located in Longkou which is a beautiful port city.
Longkou Dayuan Machinery Parts Co., Ltd. currently is the first domestic company that is a high and new technology enterprise (HNTE) with international advanced level on precision cold forging production process(Cold Extrusion) . It is professional on a large scale to produce cold forging claw pole and magnetic core for all kinds of automobile alternator, brake caliper piston, steering ball joint, steering-gear spherical housing, flange, couplingshaft, and petroleum perforating housing etc. We can manufacture almost all kinds of cold forging parts based on customers’ approved drawing. We develop and produce product molds by ourselves. The annual production capacity for cold forging claw pole reaches to 8,000,000 sets.
We have two South-Korean precision production lines, large-tonnage forging machines 9 sets imported from oversea(Japanese AIDA 400 ton, Korean Seoul Press 400 ton, Korean KNUCKLE 650 ton, Russian press 630 ton), punching machines2 sets (Japanese AIDA 100 ton, and Korean DONG SHIN 600 ton), pre-treating line, heat treating furnaces5 sets, Daewoo CNC8 sets, Japanese sawing machine, advanced physical and chemical test, and testing facilities. We passed TS16949 certificate.
We are supplying for GM in Shanghai, Beijing Hyundai, Beijing iljin (steering ball joint product), Chinese OEM CheryAutomobile, Chinese OEM Great Wall Automobile, Italian Brembo(brake caliper piston product), Korean EraeAutomotive (claw pole and magnetic core products), Japan, Korean Mando (steering-gear spherical housingand blank product), Korean Taeyang Metal Industrial (steering-gear spherical housingand blank product), Korean Sang-Shin Brake (brake caliper piston and steering-gear spherical housingblank products), etc.
We are expecting to establish a business relationship with you in the future and realize win-win cooperation.
Cold extrusion features a massive forming process to produce both hollow and solid blanks in a multistage production process (multistage pressing).Presses with a very high closing force carry out cold forming of the material under a high pressure until the desired shape is achieved.
The material is extruded there by application of a high pressure. An upper die presses the blank through a forming and cross-section-reduced die orifice - the mold.
Longkou Dayuan, is able to make products with complicated geometry and a high forming degree.
Advantages of cold extrusion process:
- high dimensional stability
- excellent surface finish
- continuous fiber flow line thanks to forming
- efficient process for mass production
产品:
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China cold forging brake piston which cold extrusion parts manufacturer and supplier | The piston is used for automobile braking and chassis system, Through cold forging (cold extrusion) process, machining, E-plating, accurate grindin... |
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China cold forging brake piston which cold extrusion parts manufacturer and supplier | The steering ball joint blank is used for automobile steering and suspension system. It is made by high quality carbon steel (material S45C), throu... |
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China cold forging brake piston which cold extrusion parts manufacturer and supplier | The claw pole is by cold forging (cold extrusion) technology, not by die-casting, which improves the comprehensive peformances of the alternators a... |
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China cold forging brake piston which cold extrusion parts manufacturer and supplier | The magenetic core product made using the same cold-extrusion production process as for connecting element with claw poles in an alternator for aut... |
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cold forging brake wheel cylinder pistons blank with cold extrusion | The piston blank is used for automobile braking by cold extrusion process, the piston is made by high quality carbon steel (material S10C and S20C)... |
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hub for automobile ' s electric power steering | It is an insert part in turbine rotor which is used for automobile ' s electric power steering. It is a framework role. The product diameter is ∮75... |
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hub for automobile ' s electric power steering | The steering ball joint is used for automobile steering and suspension system. It is made by high quality carbon steel (material S45C), through col... |
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cold forging parts steering-gear spherical housing blank from cold extrusion manufacturer | The Inner Ball Joint (IBJ) Housing is a safety-critical component of the axial joint that transmits steering loads through the tie rod and the oute... |
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cold forging steel petroleum perforating housing blank for oil drilling | It is used for petroleum drilling. Material is S20 which is a high quality carbon steel. The product we are producing which diameter from ∮30 to ∮6... |
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cold forging steel petroleum perforating housing blank for oil drilling | The coupling is used for connection between electric machine and axle, or connection between engine and axle. |
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cold forging steel petroleum perforating housing blank for oil drilling | The steering ball joint is used for automobile steering and suspension system. It is made by high quality carbon steel (material S45C), through col... |
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cold forging parts core blank with claw poles for automotive alternator | It is used for alternator rotor. It is made by high quality carbon steel (material S10C) with cold forging (cold extrusion) processes. We can produ... |
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cold forging parts core blank with claw poles for automotive alternator | The Inner Ball Joint (IBJ) Housing is a safety-critical component of the axial joint that transmits steering loads through the tie rod and the oute... |
