Back-up flange is used in conjunction with a HDPE flange adapter . Back up flanges made from cast stainless steel are highly resistant to rust, are much stronger and can out perform carbon steel flanges and provide much more corrosion resistance than your aluminum or steel flanges.
How Are Cast SS Back-Up Flanges Made?
The common cast stainless steel grade selected to produce back-up flanges is stainless steel ASTM A351 CF8M (316). 316 cast stainless steel is used because it has better corrosion resistance than 304 cast stainless steel.
With over 20 years’ experience in investment casting all kinds of stainless steel back-up flanges, we have built strong relationship with our customers all over the world. Up to now, our products have been sold to many countries such as America, Australia, New Zealand, Canada, Spain, Australia and so on. Under the challenging international trade environment, we are always committed to be a reliable and efficient supplier. We take advantage of our high-quality products and reasonable price to support your business.
To start the manufacturing process of cast stainless steel back-up flanges, the aluminum mold is highed produced according to the 3d file of the part. After preparing of the mold, the investment casting process of stainless steel back-up flanges begins, wax patterns that have the same shape as the desired back-up flange, are created by injecting wax into the mold.
Then, The wax patterns are attached to a wax tree, which is then used to begin the mold making process. Afterward, the patterns are dipped into a liquid ceramic slurry and fine sand is applied to the wet surface. When finished, the mold is allowed to dry. This coating process is repeated a number of times, which eventually results in a layered surrameic mold.
The wax is removed using a flash fire oven which melts and burns out the wax and when fully dry, the metal is poured into the mold. Bear in mind that throughout this process, the mold is preheated to a specific temperature to prevent the liquid metal from solidifying before the entire mold is filled.
Once everything has cooled down, the shell material can be removed from the metal. This is typically done using a hammer, or even a high-pressure water blast. The surface can then be finished using polishing, belting, or grinding.
The stainless steel investment casting process aims to produce complex and high precision back-up flanges with an excellent as-cast surface finish. This environmentally friendly feature pushes towards reducing or eliminating the machining operation of cast stainless steel back-up flanges.
Any inquiry on cast stainless steel back-up flanges, pls feel free to contact our stainless steel foundry!
- Cast Stainless Steel Pipe Fittings
- Cast Stainless Steel Valve Components
- Cast Stainless Steel Impeller