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Brass casting, bronze casting, copper castings

Brass casting, bronze casting, copper castings Baoding Guokun Machinery can produce various precision bronze casting components, such as cable box, copper bush, copper sleeve, copper elbow, bronze valve, bronze pipe fittings, impeller, brass casting, explosion-proof brass casting, sand casting copper sleeve, sand casting bronze valve, precision casting bronze pipe fittings, investment casting brass pipe fittings, etc Many brass casting we produced are with high precision, high strength, better electric conduction, etc. The material we offered is various bronze, brass, copper, etc The process is investment casting or sand casting. If need the bronze casting supplier, brass casting manufacturer, copper casting factory in China, please send the drawings to gina@guokuncasting.com or gina.guokun@gmail.com  

The Difference of casting & forging process

Forging Process Forging is the process of forming and shaping metals through the use of hammering,pressing or rolling. The process begins with a cast ingot, which is heated to its plastic deformation teperature then upset between dies to the desired shape and size. Forging can create a myriad of sizes and shapes with enhanced properties when compared to casting or assemblies. Casting process Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify, known as casting, which is ejected or brokedn out of the mold to complete the process. Casting is most often used for making complex shapes that would be otherwise difficult or uneconomical to make by other methods. Baoding Guokun Machinery can manufacture various high quality casting parts, forging components which can servce all industry. Our engineers can arrange the casting process or forging as per your drawings and required material, to achieve the mechanical prosperties and high quality. If need to outsource or offshore source the China casting factory, China investment casting, China sand casting, China shell mold casting, China precision casting manufacturer, China lost wax casting supplier, China hot forging, China mold forging, China heavy forging parts, iron casting parts, steel castings, alloy steel casting, stainless steel casting components, bronze casting, ductile iron castings, gray iron sand casting, please send the drawings to gina@guokuncasting.com or gina.guokun@gmail.com

How to prevent the deformation during Heat Treatment?

Precision machining parts, investment casting components, sand casting, hot forging part’ s heat treatment process are mainly decided by the different material used and the purpose of heat treatment. The general heat treatment in Guokun Machinery is Annealing, Normalizing, Quenching, Tempering, carburizing treatment, Nitriding, etc The Heat Treatment can help to improve the mechanical properties of material and the metal’s machinability, to eliminate the residual stress. How to prevent the deformation during Heat Treatment? The effective method to prevent the deformation when HT is preferably slow heating and preheating treatment. You can use the following guideline to select the preheating temperature of various steel. The preheating temperature is below the transformation point, the ordinary steel is 650-700, the high speed steel is 800-850. The preheating temperature is 500 degree. Two-stage preheating, the first section preheating’s temperature is 500 and maintain a period of time to assure the full preheating, then raised the preheating temperature to A1, below the variable point. Three-stage preheating for high-alloy steel, such as high speed steel. If need sand casting, investment casting, iron sand casting, steel investment casting, steel sand casting, hot forging, precision machining parts, carbon steel precision casting, lost wax casting, shell mold casting, pipe fittings, clamping, elbow, tee, male plug, iron pipe fittings, black iron pipe fittings from china sand casting foundry, supplier, manufactuer, please send the drawings to gina@guokuncasting.com or gina.guokun@gmail.com

Happy 2017 New Year!

Happy New Year! 2017 is coming. First of all, Hope you all have a great, relaxing and happy holiday season! All Guokun people are very thankful for your long-term and strong supporting in 2016. Please accept our sincere wishes for the 2017 new year! Hope all have a most happy and prosperous 2017 New Year! Any new RFQ of sand casting, shell mold casting, investment casting, precision casting, lost wax casting, silica sol casting, steel casting, iron castings, please do not hesitate to send the drawings to gina@guokuncasting.com or gina.guokun@gmail.com

Machined Holes

In machining, a hole is a cylindrical feature that is cut from the workpiece by a rotating cutting tool that enters the workpiece axially. The hole will have the same diameter of the cutting tool and match the geometry (which may include a pointed end). Non-cylindrical features, or pockets, can also be machined, but they require end milling operations not hole-making operations. While all machined holes have the same basic form they can still differ in many ways to best suit a given application. A machined hole can be characterized by several different parameters or features which will determine the hole-making operation and tool that is required. Diameter – Holes can be machined in a wide variety of diameters, determined by the selected tool. The cutting tools used for hole-making are available in standard sizes that can be as small as 0.0019 inches and as large as 3 inches. Several standards exist including fractional sizes, letter sizes, number sizes, and metric sizes. A custom tool can be created to machine a non-standard diameter, but it is more cost effective to use the closest standard sized tool. Tolerance – In any machining operation, the precision of a cut can be affected by several factors, including the sharpness of the tool, any vibration of the tool, or the build up of chips of material. The specified tolerance of a hole will determine the method of hole-making used, as some methods are suited for tight-tolerance holes. Depth – A machined hole may extend to a point within the workpiece, known as a blind hole, or it may extend completely through the workpiece, known as a through hole. A blind hole may have a flat bottom, but typically ends in a point due to the pointed end of the tool. When specifying the depth of a hole, one may reference the depth to the point or the depth to the end of the full diameter portion of the hole. The total depth of the hole is limited by the length of the cutting tool. Recessed top – A common feature of machined holes is to recess the top of the hole into the workpiece. This is typically done to accommodate the head of a fastener and allow it to sit flush with the workpiece surface. Two types of recessed holes are a counterbore, which has a cylindrical recess, and a countersink, which has a […]

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