Qingdao Rinborn Machinery Co., Ltd.
+86 186 6184 7678

What We Do

Manufacturing Process

  • Investment Casting

    Investment Casting

    Investment casting, also known as lost wax casting or precision casting, is specially suitable for net or near-net metal castings with complex, compact and precision structure.

  • Sand Casting

    Sand Casting

    Sand casting, which uses the sand (green clay sand or dry sand) to form the casting mould for pouring molten metal, is one of the most popular and simplest types of casting.

  • Resin Sand Casting

    Resin Sand Casting

    Resin casting process is especially suitable for casting big metal parts up to several tons per piece with a reasonable costs and fine surfaces regardless of the quantity is small or big.

  • Shell Mold Casting

    Shell Mold Casting

    Shell molding casting is also called pre-coated resin sand casting process, hot shell molding castings or core casting process. The main molding material is the pre-coated phenolic resin sand, which is more expensive than green sand and furan resin sand.

  • Precision Forging

    Precision Forging

    Forging is a metal forming process by hammering or pressing hot metal into the pre-produced metal dies. Compared to the free forging without dies, the die forging is also called precision forging because of the warm or hot metal could fill into the complex forging molds.

  • Precision Machining

    Precision Machining

    Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled material-removal process. It is aided by the CNC to reach a high and steady accuracy with less labor cost.

  • Heat Treatment

    Heat Treatment

    The nomal heat treatments we are proceeding on metal castings mainly include Quenching, Tempering, Normalizing, Solid Solution, Annealing, Carburization and other methods according to your request.

  • Surface Treatment

    Surface Treatment

    Including but not limited to: Sand Blasting, Painting, Anodizing, Passivation, Powder Coating, Electroplating, Zinc-plating, Hot-Zinc-Plating, Polishing, Electro-Polishing, Nickel-Plating, Blackening, Geomet, Zintek....etc

  • Research Development

    Research & Development

    RMC foundry is always ready to continue to invest in Research and Development (R&D) to optimize manufacturing processes, improving quality and better services. The professional proposal is also available for a balance of feasibility and the desired design.

What Materials We Involved In

The Diverse Materials We Are Specialized

  • Gray Cast Iron

    Grey Cast Iron

    Gray iron is a type of cast iron that has a graphite microstructure. It is named after the gray color of the fracture it forms. The gray cast iron is usually used for components whose stiffness is more important than its tensile strength.

  • Ductile Cast Iron

    Ductile Cast Iron

    Ductile cast iron, which is also named nodular cast iron, spheroidal graphite cast iron or SG cast iron, is usually used to produce castings with high tensile strength. Ductile iron obtains nodular graphite through spheroidization and inoculation treatment.

  • Stainless Steel

    Stainless Steel

    Stainless steel castings are usually made by lost wax casting process due to that the better surface and higher accuracy. However, at RMC casting foundry, for some large-scaled castings, we also cast and pour the stainless steel by sand casting, shell mold casting and other casting processes.

  • Alloy Steel

    Alloy Steel

    The chemical composition of the alloy steel for castings can be customized for each element based on hundreds of different grades. Cast steel should be used when the strength of the castings is relatively high and the cast iron cannot meet the requirements.

  • High Chrome Cast Iron

    High Chrome Cast Iron

    High-chromium alloys are composed of chromium as a base element and the addition of other elements. Compared to nickel, metallic chromium has a higher melting point and exhibits excellent oxidation resistance, high-temperature resistance, and corrosion resistance.

  • High Manganese Alloy

    High Manganese Alloy

    Manganese alloys are ferroalloys composed of manganese, silicon, iron, and small amounts of carbon. Ferromanganese is further classified into high-carbon, medium-carbon, and low-carbon types based on its carbon content.

  • Aluminium Alloy

    Aluminium Alloy

    Aluminium and its alloys could be cast and poured by high pressure die casting, low pressure die casting, gravity casting, sand casting, investment casting and lost foam casting. Usually, the aluminum alloy castings have less weight but complex structural and better surface.

  • Copper Brass and Bronze

    Copper, Brass and Bronze

    Brass castings and bronze castings both are copper-based alloy castings which could be cast by sand casting, investment casting and shell mold processes. Brass composed of copper and zinc is called ordinary brass. Diverse grades of brass and bronze can be casted at RMC foundry.

  • Nickel Base and Cobalt Base Alloys

    Nickel Base and Cobalt Base Alloys

    The Nickel base alloy is more popular than that of Cobalt. But both of them are used for high-end machinery or industries due ot their high costs. Cobalt-based alloy is a hard alloy that can withstand various types of wear, corrosion and high temperature oxidation.

Why Choose Us

Our Advantages

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    Rich-experienced Team in Metal Foundry

    RMC has its own workshop for green sand casting, lost wax investment casting, CNC machining and other manufacturing technologies, who are serving customers in different OEM industries across different markets.

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    Professional Design and Engineering

    The free professional proposals on the appropriate casting / manufacturing processes, metal and a cost-down advice could be provided even before we quote.

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    One-Stop Solution for Metal Forming and Treatments

    RMC could provide the whole processes from casting pattern design, mould, samples, trial production, mass manufacturing, quality control, logistics and after service.

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    360 Degree Quality Assurance

    From chemical composition, mechanical properties, microstructure to geometry dimensions, the real results should be 100% reach the required numbers.

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    Strong Supply Chain Management

    With our partners in areas of heat treatment, surface treatment and metal fabrication, more value-added services could be available from us.

Request a Quote

Ask the Engineering Experts

As an iron and steel casting foundry, RMC is ready to answer your any technical question or commercial inquiry about sand casting, investment casting, CNC machining, heat treatments and surface treatments.
Just feel free to leave your message or send and email to our engineering team. Soon they will give you the professional proposals and answers to reach a cost-effective solutions as well as our possible proposals on optimizing the structure to fit the feasiblity of manufacturing.
It would be highly appreciated if you can also let us know the following information together with your drawings or rough ideas:

• Estimated Annual Quantity

• Grade of the Required Metal and Alloys

• Dimensional and Geometrical Tolerance

• Heat Treatment (if any) and Required Mechanical Properties.

• Surface Finish

• Any other Special Requirement

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