OEM lost wax casting introduction

OEM lost wax casting service provided by us can meet different clients’ needs. We can make precision casting parts according to your drawings or samples. lost wax(Investment) casting is a method of precision casting to make complex near-net-shape details using replication of wax patterns. Investment casting or lost wax is a metal forming process that typically uses a wax pattern surrounded by a ceramic shell to make a ceramic mold.

When the shell dries, the wax is melted away, leaving only the mold. Then the casting component is formed by pouring molten metal into the ceramic mold. The lost wax casting process is suitable for repeatable production of net shape components from a variety of different metals and high performance alloys.

Stainless steel is the most welcomed material to make lost wax casting. Compared to other casting processes such as die casting or sand casting, it can be an expensive process. However, the components that can be produced using investment casting can incorporate intricate contours, and in most cases the components are cast near net shape, so require little or no rework once cast.

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OEM lost wax casting products

Process/Method Lost wax  casting, investment Casting, Precision casting, Machining
Quality Cert. IATF16949:2016, ISO9001:2015, Material Cert. PPAP.
Casting Material Stainless steel, Carbon steel, Alloy steel, or other OEM materials.
Application Auto Parts, machinery equipment, chemical equipment, marine hardware, hardware tools, medical and foodstuff appliance, construction hardware, mining machine parts and others.
Standard DIN, ASTM,AISI, BS, JIS,GB,KS etc.
Heat treatment Normalizing, Tempering, Quenching, Annealing,  Quenching & Tempering, Carburization, Solution treatment.
Surface treatment Electrolytic polishing, Mirror polishing, acid passivation, Shot blasting, Sand blasting, glass blasting, blackening, Satin Polishing.
Machining Complete machining such as Machining center, CNC, Lathe, Milling machine, drilling etc.
Test equipment Spectrometer, Leader CMM inspection, Mechanical inspection, UT, MT, Dye penetrant inspection, Roughness tester, X-ray inspection, Metallographic detector, HB hardness inspection, Leeb hardness inspection
Size and design As per the customer’s drawings and requirements, 0.05kg-150kg for lost wax investment casting, 50kg-5tons for resin sand casting.
As per the customer’s samples
Packing Normal export packaging
As per customers’ requirements

 

OEM lost wax casting introduction

General manufacturing process of OEM lost wax casting:
 
1. Making the investment pattern
    – Firstly, design and manufacture the mold according to the shape and size of the part.
    – Then, inject the pasty fusible materials such as wax or plastic into the mold to form the precise investment pattern.
 
2. Coating with refractory materials
    – Immerse the fabricated investment pattern in a special coating to evenly cover the surface of the pattern with a layer of refractory materials.
    – Usually, multiple coatings are required and drying is carried out to increase the thickness and strength of the coating.
 
3. Sand sprinkling
    – After coating with refractory materials, sprinkle fine sand onto the surface of the investment pattern to enhance the strength and permeability of the shell mold.
 
4. Drying and hardening of the shell mold
    – Place the coated and sanded shell mold in an appropriate environment for drying and hardening.
 
5. Dewaxing
    – Put the shell mold in a heating device to melt and flow out the investment pattern material, forming a hollow shell mold.
6. Shell mold baking
    – Bake the dewaxed shell mold at high temperature to remove the remaining wax and moisture and improve the strength and permeability of the shell mold.
 
7. Melting and pouring
    – Melt the corresponding metal material according to the material requirements of the part.
    – Pour the molten metal liquid into the baked shell mold.
 
8. Cleaning and post-treatment
    – After the casting cools and solidifies, remove the shell mold.
    – Perform post-treatment processes such as cleaning, cutting, and grinding on the casting to obtain the final finished part.
 
OEM lost wax casting can produce castings with complex shapes, high dimensional accuracy, and good surface quality, and is widely used in aerospace, automotive, medical and other fields. 

1.How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment.

2.What’s the production time for new molds and mass production?
10-20 days to make the new moulds, mass production takes around 15 days,can process urgently if need.

3.Can you send me samples?
Yes, Samples are for free, and freight is on your side.

4.What kind of production service do you provide?
Mold making, all kinds of casting, CNC machining, stamping, plastic injection, assembly, and surface treatment.

5.What is the payment terms?
T/T: 30% deposit, the balance will be paid after B/L copy;
L/C: the balance irrevocable L/C at sight.

6.Why should you buy from us not from other suppliers?
Quicker response: 24 hours for quotation;
Dependable quality ISO9001;
Excellent Team Positive, flexible, passionate;
High business reputation Maintain long smooth relationship with clients.