4140 Parking pawl bracket

Part name: parking pawl bracket, park pawl guide

Metal: 4140 low alloy steel investment casting parts

Baoding Guokun, with 25 years casting experience, can produce various mild steel investment casting for various industries. Lost wax investment casting process can produce complex parts that are near-net shape. The steel lost-wax casting parts manufactured by Baoding Guokun is with complex shapes, tight and accurate tolerances that have a standard of ISO 8062 CT9-10, fine surface finish 6.3-12.5 μm Ra, minimal machining to reduce time and cost and cost-effective. The steel lost wax investment casting parts produced by Guokun, usually service different industries, such as railroad casting, pump casting, valve casting, heavy truck casting parts, mining casting, power generation equipment parts, etc.

Steel Castings

Description

China low carbon steel casting factory

What’s alloy steel?

Alloy steel is a metal that contains iron, carbon and other alloy elements, such as molybdenum, manganese, nickel, chromium, vanadium, silicon, boron, which that improve the mechanical properties, such as strength, hardness, corrosion resistance, and toughness. And the alloy steel is broken down into 3 classes based on alloy content:

Low alloy steel: Contains 1%~5% alloying elements, such as AISI 4140, 4130, 4340, 6150, 8620, etc

High alloy steel: Contains more than 8% alloying elements.

Stainless steel: Contains chromium, which gives it good corrosion resistance, such as 303, 304, 316, 310, 321, 17-4, CF8, CF8M, 316L, etc.

4140 low alloy steel chemical composition

Chemical composition
Standard	ASTM A29	EN 10083/EN 10250	JIS G4105
Grade	4140	42CrMo4/1.7225	SCM440
C%	0.38-0.43	0.38-0.45	0.38-0.43
Mn%	0.75-1.00	0.6-0.9	0.60-0.85
P%	0.035	0.035	0.03
S%	0.040	0.035	0.03
Si%	0.15-0.35	0.4	0.15-0.35
Cr%	0.8-1.10	0.9-1.2	0.9-1.2
Mo%	0.15-0.25	0.15-0.30	0.15-0.30

Compared with carbon steel casting parts, the alloy steel investment casting is stronger and more resistant to corrosion. Because the alloy steel contains iron and other elements like nickel, chromium, manganese, vanadium, and molybdenum. The carbon steel contains iron and carbon as its primary alloying elements. But the carbon steel investment castings are cheaper and easier to be machined.

Baoding Guokun Investment casting process steps for low alloy steel casting components:

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 steel 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

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

The Silica Sol investment casting 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 casting 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.

A High Quality China Foundry！

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.

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

Baoding Guokun machinery

Pump casting, Valve casting, agricultural casting, aircraft casting, railway casting, road casting, motor casting, mining casting, power generation investment casting, Medical casting, marine industry casting

Baoding Guokun Machinery Co., Ltd.

Baoding Guokun Export and Import Trading Co., Ltd

Office Add: 777# Chaoyang South Street, Baoding City, Hebei, 071000, China

Factory Address: Wangdu County, Baoding City, Hebei, 071000, China

Website: www.metalcastingfactory.com

Tel: 86-312-5951319 Fax: 86-312-5951296

Phone: 86-181 3278 9710 (WhatsApp & WeChat)

Email: gina@guokuncasting.com

gina.guokun@gmail.com