OEM customized Investment casting, sand casting, hot forging
Material: Stainless Steel, Carbon Steel, Alloy Steel
Process: lost wax casting,sand casting, hot forging + machining
Produced as customer's drawing and sample. Investment casting can make use of most metals, most commonly using aluminum alloys, bronze alloys, magnesium alloys, cast iron, stainless steel, and tool steel. This process is beneficial for casting metals with high melting temperatures that can not be molded in plaster or metal. Parts that are typically made by investment casting include those with complex geometry such as turbine blades or firearm components. High temperature applications are also common, which includes parts for the automotive, aircraft, and military industries.
Investment casting requires the use of a metal die, wax, ceramic slurry, furnace, molten metal, and any machines needed for sandblasting, cutting, or grinding. The process steps include the following:
- Pattern creation - The wax patterns are typically injection molded into a metal die and are formed as one piece. Cores may be used to form any internal features on the pattern. Several of these patterns are attached to a central wax gating system (sprue, runners, and risers), to form a tree-like assembly. The gating system forms the channels through which the molten metal will flow to the mold cavity.
- Mold creation - This "pattern tree" is dipped into a slurry of fine ceramic particles, coated with more coarse particles, and then dried to form a ceramic shell around the patterns and gating system. This process is repeated until the shell is thick enough to withstand the molten metal it will encounter. The shell is then placed into an oven and the wax is melted out leaving a hollow ceramic shell that acts as a one-piece mold, hence the name "lost wax" casting.
- Pouring - The mold is preheated in a furnace to approximately 1000°C (1832°F) and the molten metal is poured from a ladle into the gating system of the mold, filling the mold cavity. Pouring is typically achieved manually under the force of gravity, but other methods such as vacuum or pressure are sometimes used.
- Cooling - After the mold has been filled, the molten metal is allowed to cool and solidify into the shape of the final casting. Cooling time depends on the thickness of the part, thickness of the mold, and the material used.
- Casting removal - After the molten metal has cooled, the mold can be broken and the casting removed. The ceramic mold is typically broken using water jets, but several other methods exist. Once removed, the parts are separated from the gating system by either sawing or cold breaking (using liquid nitrogen).
- Finishing - Often times, finishing operations such as grinding or sandblasting are used to smooth the part at the gates. Heat treatment is also sometimes used to harden the final part.
We have professional Quality Management System ISO/TS 16949:2009 and ISO 9001:2008. We are also applying for ISO14001 environmental management system now.
Qingdao New International Automotive Spare Parts Co., Ltd. Has two vertical automation molding lines & one Horizontal Molding Line with DISA sand treatment lines and also has four semi-automatic modeling line such as Z148E & Z148T. The foundry has investment casting workshop with lost wax casting, heat treatment workshop, machining workshop with different CNC and numerical control machine tool. The main products is ductile iron casting parts, gray iron casting parts, steel casting parts and investment casting parts. The fast analyzer can control the chemical contents and temperature, which has the advantage in the casting industry. The factory has a strong technical force, advanced products' design, mature technological level and the first-rate engineering technicians and artisans with more than 30 years of casting experience. We can provide all kinds of the casting production of structural parts from automobile valves, chassis to braking system. The products' quality is steady and reliable, and they are the auxiliary products mainly to China heavy duty automobile special vehicles. The factory sell the ductile iron & gray iron casting parts and investment casting parts for railway, train, auto, truck, farm machinery and power industry, which has been won the high reputation.
Our company have professional Quality Management System IATF 16949: 2009 and ISO9001: 2015. There is also applying for ISO14001 environmental management system now. They have been passed the audit by different customer in different industries from the country of all the world. The quality of production management is completely organized according to the Quality Management System, which has obtained the trust and admire by so many customers. The core enterprises control the quality strictly which is equipped with complete physical & chemical laboratory, optical spectrum analysis and coordinate measuring machine. We have excellent research and development team they can accelerate the development of new products.
Currently, the casting products have exported to Japan, Korea, Germany, United States and other major markets for automotive industry, train & railway, rigging, construction, shipbuilding, electric power, agricultural machinery and so on.
Based on the enterprise conception of "Integrity and Quality", our company will always adhere to the enterprise culture, "Respect for Nature and Love for Mankind" and Dedicated to Customers Satisfaction". We are willing to establish the close business relationship on the basis of win-win cooperation with our customers from all the world.
