Precision Alloy Steel Investment Casting , Pump Base Ceramic Shell Process

Quick Detail:

l  Pump base investment casting;

l  Casting type: silica sol ceramic shell process;

l  Weight: 4.2 kg;

l  Foundry with PED 97/23/EC & AD2000 W0 Certifications;

l  Chemical composition inspected by German spectrometer;

l  X ray service available.
 

Description:

 
Alloy steel investment casting weights from 10g to 80kg, electropolishing or vibrate polishing service available.
 

Alloy steel Investment Casting Process:
 

l  Wax mould making: Our wax tooling is made in house by Winnington experts.

l  Wax injecting: Filling the entire mould with molten wax, and wait until it cooled, until a wax pattern is shaped and harden as desired.

l  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.

l  Shell making: 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.

l  Dewaxing: 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.

l  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.

l  Pouring: The investment mold is then placed cup-upwards into a tub filled with sand and be poured.

l  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.
 
 

The most common material that We cast:

Applications:
 

 
Specifications:

Competitive Advantage:

 
Winnington One-stop Services
 
Tool Making
With in house expertise and tool shop, we have the complete engineering team to create molding / tooling necessary for production
 
Secondary Machining
We are equipped with High-precision CNC lathe/milling center to process the interior and exterior of various types of curved surfaces such as cylinder, cones, contrate, chamfer, bevel edges, screw thread, milling holes and boring holes, while conforming to the JB/T8324.1-96 Standard.
 
Surface Finishing 
We provide customers with various surface finishing treatments, including mirror polishing, passivation, sand blasting, shot blasting, barrel finishing and vibratory finishing. To meet the growing needs of our customers, special treatments may also be arranged.