How a highly reliable engine is made? The answer should not be short. Scientific and advanced design, exquisite processing technology, mature application experience... These are the key factors supporting the high quality of the engine. In addition to drawing design, assembly process, application support, etc., giving the engine the strongest body and bones is also the key to ensuring the high reliability of the engine. And this is inseparable from the superb casting level and high-quality casting products. Recently, at the opening of the 14th China International Foundry Expo, Weichai demonstrated its environmentally friendly and technologically advanced casting products. Not only did it spread the manufacturing concept of “Green Weichaiâ€, but also the “high reliability of Weichai productsâ€. "We did a deep annotation. At the expo, Weichai brought its castings from Weichai Power (Weifang) Casting & Forging Co., Ltd. and Weichai Binhai Foundry Co., Ltd. to stunning appearances. Weichai Power (Weifang) Casting and Forging Co., Ltd. Weichai Power (Weifang) Casting & Forging Co., Ltd. displayed the cylinder block blanks Weichai WP9H and WP12 Lanqing produced, and the Weichai 4/7/9L connected cylinder heads, gear chambers and gearbox castings. Among them, WP9H blanks are made of high-grade cast iron. In order to meet the requirements of Weichai's 1.8 million kilometers/30,000 hours of high reliability and 20 MPa high explosion pressure, the body strength of the cylinder block needs to reach 250 MPa. The integrated cylinder with integrated intake pipe is used. The cover body must have a tensile strength of 300 MPa. In addition, the Weichai WP7 cylinder head blank and Baudouin M26 body exhibited represent the production volume of Weichai's cast vermicular iron. Weichai Binhai Foundry At the exhibition, the casting products of Weichai Binhai Foundry were Baudouin V-type M26 cylinder block and 6170 crankshaft. It is understood that Baudouin V-type M26 cylinder body, cast iron body, mesh structure, high strength, good cooling effect; 6170 crankshaft high grade, large size, advanced production technology to ensure the casting ductile iron crankshaft scrap rate below 1.5% . Weichai Power (Weifang) Casting and Forging Co., Ltd. Weichai Power (Weifang) Casting and Forging Co., Ltd. has an annual production capacity of over 350,000 tons of castings. The products cover engine core components such as gray iron, vermicular cast iron, and ductile iron. The qualification rate of the main products is stable at over 97%, reaching the industry. Advanced level. The products are supported in batches in the internal combustion engine, transportation, construction machinery, energy, chemical, and environmental protection industries. The company has cupola (35t)/electric furnace double smelting and electric furnace smelting technology, 8 German KW and HWS fully automated styling lines, 11 sets of imported core making centers, and DISA shot blasting machines and other special cleaning equipment. The company has passed a complete system certification and has 137 sets of equipment for inspection of raw materials, testing of mechanical properties of castings, size and metallographic inspection, and has realized the whole process monitoring of materials entering the factory, production process control and casting inspection. Casting process development uses professional software to achieve high efficiency, paperless design of casting processes and molds. Casting simulation workstation, simulation analysis and optimization of casting process. Weichai Binhai Foundry Weichai Binhai Foundry has six electric furnaces and two largest and most automated machine body and crankshaft resin sand moulding lines in China. It can realize large-scale diesel engine block blanks with maximum casting weight of 70T at a time. Weichai Binhai Foundry has always adhered to the concepts of “lean†and “environmental protection†in the planning, construction and production process, and adhered to the “responsibility-based†management model, striving to become China’s largest green production base for medium speed engine castings. Chemical parts investment casting is one branch of Alloy Steel Precision Casting, which is widely used in chemical industry markets. Casting for chemical parts adopts lost wax casting, also called investment casting.
In wax pattern process,we mix stearic acid and paraffin wax. In wax pattern making, as you know, it is better than polyethylene, and the wax deformation is small. In dipping slurry process, most of the suppliers adopt water glass technics in domestic area,but we adopt compound technics or silica sol technics.
In shell making,we adopt automatic sand-covering production line, which was invented under the guidance of our general manager.The indoor temperature was controlled by air-conditions,keeping the temperature at 24℃±1℃, which can make the castings much more stable,the internal tissues much more well-proportioned.
In dewaxing process, about 95% of the castings suppliers adopt the original water dewaxing technics, but we using the advanced steam dewaxing technics, which we are very proud of.This can effectively avoid the air-hole and sand-hole,making the casting look much nicer.
In smelt process,we use middle frequency furnace,avoiding the emergence of the oxide; in molten steel control part, we use Germany-imported direct reading spectrometer machine,assuring its quality before the molten steel out of the furnace. During this process we use ERP production and management software to get the feedback information.
In heat treatment process, we use electric furnace,and adopt double-temperature control in order to heat the products equally. As a result, the products will have great metallurgical structure.
Our tolerance can reach at the grade of 5-7 according to our country`s tolerance standard.
In machining process, we have 12 CNC machining centers and some other machines, so we can make further machining if the customers need.
Our chemical parts investment cast has quality assurance in accordance with ISO9001: 2008, strict material inspection and exact dimension control, with 100% quality control. OEM order is welcome. The investment casting of chemical parts can be made completely based on your specifications such as drawing, design, sample etc.
Chemical Parts Investment Casting Chemical Parts Investment Casting,Investment Casting of Chemical Parts,Precision Castings of Chemical Parts,Chemical Parts Precision Castings Wei fang junlong precision casting Co.,Ltd , https://www.junlongcasting.com
Weichai Engine Manufacturing Process Promotion 
The 14th China International Foundry Expo Weichai Booth 
Spectators watched Weichai's high quality castings 
Weichai WP7 cylinder head blank 
Weichai casting 6170 crankshaft 
Weichai Boduan V-type M26 engine block 
Weichai casting 35T oxygen-rich water-cooled long furnace-old cupola 
Weichai Casting Automated Modeling Line 
Weichai casting rich testing equipment 
Weichai's largest crankshaft resin sand molding line 