Pump stage casing precision casting in stainless steel using lost wax method.
Quick Detail:
- Material:stainless steel(1.4408)
- Process: Silica Sol Lost wax casting;
- Wax type: Medium temperature wax;
- Weight: various from 5kg~13kg;
- Certificates of Chemical Compositions and Mechanical Properties will be provided
- Casting will be supplied in as cast or heat treated condition in accordance to relevant material standard
Description:
Brife description for precision investment casting process:
- Wax mold making: Our wax tooling is made of Aluminum which is easy for machining and fast for cooling, at the same time, light for handling.
- Wax injection: Feeding the entire mould with molten wax, and cool, until a desired wax pattern is shaped and harden.
- Assemble the wax patterns: The wax patterns are welded to a runner system by a heated metal tool according to a certain pattern cluster(tree) design.
- Investment: The ceramic mould, known as the investment, is produced by three repeating steps: coating, stuccoing, and hardening. The first step involves dipping the cluster into a slurry of fine refractory material and then letting any excess drain off, so a uniform surface is produced. This fine material is used first to give a smooth surface finish and reproduce fine details. In the second step, the cluster is stuccoed with a coarse ceramic particle, by dipping it into a fluidised barrel, placing it in a rainfall-sander. Finally, the coating is allowed to harden.
- Dewax: The investment is then allowed to completely dry, which can take 16 to 48 hours. It is then turned upside-down and placed in a autoclave to melt out and/or vaporize the wax.
- Burnout & preheating: The mold is then subjected to a burnout, which heats the mold to remove any moisture and residual wax, and to sinter the mold. The mold is preheated to allow the metal to stay liquid longer to fill any details and to increase dimensional accuracy.
- Pouring: The investment mold is then placed cup-upwards into a tub filled with sand and be poured.
- After treatment: The shell is then hammered, media blasted, vibrated, waterjeted, or chemically dissolved to release the casting. Further actions like weld repairing,grinding, shot blasting,CNC machining, electro plating will be taken to get a final cleaned precision casting part.
Applications:
Pumps body and impellers,
Valves body and components,
Pipe Fittings
Automotive
Machine assembly parts
Marine and Oil
Mechanical parts
Specifications:
|
material |
1.4408 |
|
Standards |
ASTM,JIS,DIN,BS,MIL |
|
Casting weight |
5kgs~13kgs |
|
Wall thickness |
1.5-2mm Min |
|
Casting process type |
silica sol lost wax casting |
|
Machining |
CNC machining,CNC lathe |
|
Surface finish |
electro polishing, satin, mirror polishing, pickled, zinc plating |
|
Tolerances |
Raw Casting tolerances in drawing are according to DIN VDG-Merkblatt P-690; Dimension less than or equal to 24mm will in accordance to D1 standard; Dimension greater than 24mm will in accordance to D2 standard |
Competitive Advantage:
