Processing method for improving mechanical property of casting
A technology of mechanical properties and processing methods, applied in the field of casting processing, can solve the problem of high production cost of castings, and achieve the effects of being beneficial to pouring and punching, improving the utilization rate, and being beneficial to absorption
Inactive Publication Date: 2013-06-12
山东大柴缸体缸盖股份有限公司
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Problems solved by technology
[0002] With the development of the automobile industry, people have higher and higher requirements for engine materials, especially for mechanical properties. Alloying casting materials is an important method to improve the mechanical properties of castings in China. However, with the increase in alloy prices, the production cost of castings is also increasing. raised up
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[0013] Example, a processing method to improve the mechanical properties of castings is to repair the package first: repair a pit with a diameter of 120mm and a depth of 150mm at the bottom of the package near the furnace wall; add 7-8 spheroidizing agent at 0.15% of the iron output In the round pit, cover the surface of the spheroidizing agent with a layer of iron powder. The iron powder must be completely covered with the spheroidizing agent and tamped; the temperature of molten iron out of the furnace is controlled at 1450~1460℃, normal inoculation with the flow, and casting according to the conventional method . Normally inoculated with the flow, castings are carried out according to conventional methods.
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The invention discloses a processing method for improving the mechanical property of a casting. The method comprises the following steps: constructing a round pit with the diameter of 120mm and depth of 150mm at the bottom close to the furnace wall, adding 7-8 spherodizing agent according to 0.15% of iron-tapping amount in the round pit, covering a layer of iron powder on the surface of the spherodizing agent, wherein the iron powder must be completely covered on the spherodizing agent, and tamping, controlling the tapping temperature of the molten iron at 1450-1460 DEG C, performing normal stream inoculation, and casting according to the general method. The graphit form of the casting is changed by the spherodizing agent, the method disclosed by the invention can be used for replacing the performance of the alloy part, is simple in processing method and low in production cost.
Description
Technical field [0001] The invention belongs to the technical field of casting processing methods, and in particular relates to a processing method for improving the mechanical properties of castings. Background technique [0002] With the development of the automobile industry, people have higher and higher requirements for engine materials, especially mechanical properties. At present, alloying of casting materials is an important method to improve the mechanical properties of castings in China. However, with the increase in alloy prices, the production cost of castings is also increasing. Got high. Summary of the invention [0003] The purpose of the present invention is to improve the shortcomings of the prior art and provide a processing method for improving the mechanical properties of castings with a spheroidizing agent to change the graphite shape of castings, which can replace the properties of alloy parts, simple processing methods and low production costs. [0004] The p...
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Inventor 刘晓旭
Owner 山东大柴缸体缸盖股份有限公司