Hebei Yogem Castings Co., Ltd

Which types of sand are often used in the dry sand treatment of stainless steel castings?   Grey Iron Casting Company  is here to help you. Regarding stainless steel castings, sand plays a vital role in its production process and has a great impact on the quality of stainless steel castings. Therefore, the selection and use of sand also have certain requirements. Which types of sand are often used in the dry sand treatment of stainless steel castings? Haiyao Casting is here to help you. Grey Cast Iron Casting The key part in the production of stainless steel castings is the sand treatment part, which is the treatment of dry sand. The selection of these types of sand will have less dust and will have a good effect, especially the pearl sand. Even if there is no sand treatment for the time being, it will be artificially cooled. Sand dust removal is relatively quicker. Commonly used dry sand for stainless steel castings is generally washed quartz sand, sea sand and pearl sand, wi...

  Grey Cast Iron Casting 1. Charge ratio: The method of charge ratio is pig iron + scrap steel + recharge material + recarburizer, and the nitrogen in the recarburizer is used to change the shape and length of graphite to increase the hardness of gray iron castings. 2. Control of chemical composition (1) Many smelting companies believe that sulfur is harmful. The lower the content of sulfur in molten iron, the better. In fact, this is not the case. "Silicon carbide" and "manganese-sulfur ratio" should be considered in gray iron castings. . That is, Mn=1.71S+(0.2~0.5). HT250 chemical composition table: CPSiMnTiS3~3.3≤0.121.65~2.050.7~1.1≤0.05≤0.12 (2) For low alloying, one or two alloying elements should be added. When adding, the content of carbon element should be considered and not blindly pursued hardness. 3. Overheating of molten iron For gray iron castings, increasing the temperature of molten iron within a certain range can refine the graphite, make the matrix...

  As an   OEM Castings Supplier , share with you. Grey Cast Iron Casting 1. Charge ratio: The method of charge ratio is pig iron + scrap steel + recharge material + recarburizer, and the nitrogen in the recarburizer is used to change the shape and length of graphite to increase the hardness of gray iron castings. 2. Control of chemical composition (1) Many smelting companies believe that sulfur is harmful. The lower the content of sulfur in molten iron, the better. In fact, this is not the case. "Silicon carbide" and "manganese-sulfur ratio" should be considered in gray iron castings. . That is, Mn=1.71S+(0.2~0.5). HT250 chemical composition table: CPSiMnTiS3~3.3≤0.121.65~2.050.7~1.1≤0.05≤0.12 (2) For low alloying, one or two alloying elements should be added. When adding, the content of carbon element should be considered and not blindly pursued hardness. 3. Overheating of molten iron For gray iron castings, increasing the temperature of molten iron within a certai...

Elderly people in the foundry industry clearly understand that the role of gray cast iron inoculation is very important. What is the purpose of such an important inoculation?   OEM  Castings Supplier  will share with you in detail: The mechanical properties of gray cast iron depend to a large extent on its microstructure. Gray cast iron that has not been inoculated has unstable microstructure, low mechanical properties, and white holes are prone to appear in the thin wall of the casting. In order to ensure the consistency of casting quality, inoculation treatment is essential. Ferrosilicon Inoculant The inoculant used in the inoculation treatment of gray cast iron is added in a small amount, which has little effect on the chemical composition of cast iron, but has a great effect on its microstructure, so it can improve the mechanical properties of gray cast iron and its physical properties are also obvious influences. Good inoculation treatment has the following effects: ...

Elderly people in the foundry industry clearly understand that the role of gray cast iron inoculation is very important. What is the purpose of such an important inoculation?   OEM  Castings Supplier  will share with you in detail: The mechanical properties of gray cast iron depend to a large extent on its microstructure. Gray cast iron that has not been inoculated has unstable microstructure, low mechanical properties, and white holes are prone to appear in the thin wall of the casting. In order to ensure the consistency of casting quality, inoculation treatment is essential. Ferrosilicon Inoculant The inoculant used in the inoculation treatment of gray cast iron is added in a small amount, which has little effect on the chemical composition of cast iron, but has a great effect on its microstructure, so it can improve the mechanical properties of gray cast iron and its physical properties are also obvious influences. Good inoculation treatment has the following effects: ...

As a   Grey Iron Casting Company , share with you. Enhancement method Methods to increase the tensile strength of gray iron castings: 1. A small amount of carbon can be added to the raw materials. In the carbon content of gray iron castings, the carbon content is mostly 2.6% to 3.6%, and the silicon content is 1.2% to 33.0% . In the case of determining the wall thickness of gray iron castings, an appropriate amount of manganese should also be added. Grey Cast Iron Casting Using alloying methods to improve the tensile strength of gray iron castings, adding appropriate amount of trace alloys, chromium, molybdenum, tin and other elements can also significantly improve the tensile strength of gray iron castings, and do a good job of inoculating molten iron. Defect Once porosity or shrinkage occurs on the casting surface, it becomes a waste product. The looseness may first be caused by the unreasonable structure. Porosity, shrinkage porosity, and shrinkage holes are produced in areas wi...

As a   Grey Iron Casting Company , share with you. Enhancement method Methods to increase the tensile strength of gray iron castings: 1. A small amount of carbon can be added to the raw materials. In the carbon content of gray iron castings, the carbon content is mostly 2.6% to 3.6%, and the silicon content is 1.2% to 33.0% . In the case of determining the wall thickness of gray iron castings, an appropriate amount of manganese should also be added. Grey Cast Iron Casting Using alloying methods to improve the tensile strength of gray iron castings, adding appropriate amount of trace alloys, chromium, molybdenum, tin and other elements can also significantly improve the tensile strength of gray iron castings, and do a good job of inoculating molten iron. Defect Once porosity or shrinkage occurs on the casting surface, it becomes a waste product. The looseness may first be caused by the unreasonable structure. Porosity, shrinkage porosity, and shrinkage holes are produced in areas wi...