Stainless steel butterfly valve disc

Part name: Stainless steel butterfly valve disc

Metal: Stainless steel CF8, CF8M, 304, 316

Process: Silica sol investment casting and machining process

Baoding Guokun has been specialized in the designing and manufacturing of various valve components for ball valve, gate valve, globe valve, butterfly valve, through conduit gate valve, knife gate valve, bellow valve, strainers and flow control components. If you need investment casting stainless steel butterfly valve disc, please feel free to contact gina@guokuncasting.com to get the quotation or call us 86-18132789710(WhatsApp & WeChat)

Valve Castings

Description

Guokun Casting, of Baoding Hebei is an ISO 9001-2008 registered iron and steel foundry & supplier of high quality carbon steel, cast iron and machined castings used in power, mining, railway, agricultural, tillage, truck, automobile, pump, valve, motor, pipe fittings and gear industry. Baoding Guokun has been specialized in the designing and manufacturing of various valve components for ball valve, gate valve, globe valve, butterfly valve, through conduit gate valve, knife gate valve, bellow valve, strainers and flow control components.

What is a valve disc?

The valve disc is an important movable component within a valve that controls the flow of fluid by either allowing it to pass through or block it, depending on its position; essentially, it’s the valve components that directly regulates the fluid flow by creating a seal against the valve seat when closed.

A broad line of materials is offered and fabricated in Baoding Guokun.

Steel material ranges from cast steel, forged steel to special alloy steel like Monel, Duplex.

Cast iron materials in GG20, GG25 or ductile iron of GGG40, GGG50, etc.

Aluminum, brass, copper and bronze valve parts can be produced in our factory.

What’s the best material for a valve disc?

Stainless steel is the most common valve disc material because of its anti-corrosive, anti-heat and anti-contamination properties. The Baoding Guokun stainless steel casting valve disc is made as investment casting process, or lost-wax casting process that results in a significantly improved surface finish & casting tolerance and valve disc quality than other sand cast stainless steel valve disc and bronze valve disc.

What’s the best investment casting process for valve disc?

Baoding Guokun Investment casting stainless steel valve disc steps:

No.	Steps	Details
1	Patterns Makings	Creating a wax mold of the desired stainless steel pump impellers, and then adding sprues to the wax model to create a tree-like structure.
2	Shell Building	Coating the wax pattern with a layer of fire-resistant paint, and then to be sprinkled with sand, so after a period of hardening, the surface will form a layer of fire-resistant thin shell.
3	Dewaxing	Removing the wax, the shell is placed into an oven, melting the wax so that it can run out of the shell.
4	Pouring	Pouring the molten stainless steel 304 or 316 into the shell, and waiting for solidification under room temperature.
5	Post treatment	After cooling, knock the shell and cut the sprue gate by grinding machinery to achieve net shape impeller castings. Then shot blasting to move mill scales to assure the smooth casting surface.
6	Machining	CNC Machining & Balancing

China investment casting valve disc factory

China investment casting stainless steel valve disc factory

Two types of investment cast processes: Silica Sol process and the water glass process.

The Silica Sol process is used to cast complex high-quality parts with requirements of a very good surface finish and close dimensional tolerances. This process can range from a weight of just a few ounces to approximately 80 pounds. If you are concerned with precision in very small parts, we are especially proficient at very fine detail work including teeth and serrations.

The water glass process is typical of the process in the early stages of investment castings. It generally is capable of much larger castings than the Silica Sol process, but does not have as good of surface finish or tolerances. The water glass process provides parts that have better surface finish and dimensional tolerances than sand castings. This process may range in weight from several ounces to approximately 200 pounds.

First article layouts and spectrometer material certifications are provided with all first article samples.

Custom service: A variety of secondary operations can be performed on both types of investment castings. They include heat treatment, machining, plating, painting, polishing and buffing, assembly services and even custom packaging.

China investment casting stainless steel chemical composition and mechanical properties

A High Quality China Metal Casting Factory！

With a monthly capacity of 10,000kgs and with more than 15 years of experience ensure the short delivery and the highest valued iron & steel casting parts.