Novel heat resistant steel
A heat-resistant steel and a new technology, applied in the field of alloy steel, can solve the problems of high production cost of heat-resistant steel, high nickel content in steel, and high nickel price.
Inactive Publication Date: 2010-02-17
泰州市永昌冶金设备有限公司
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Problems solved by technology
[0002] In the prior art, austenitic heat-resistant steel mainly uses chromium-nickel as alloying elements, which is characterized by high nickel content in the steel, and the price of nickel is expensive, which makes the production cost of heat-resistant steel higher
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Embodiment 1
[0011] Example 1, the raw materials of heat-resistant steel are put into the intermediate frequency induction furnace according to the following weight percentages: C0.75%; Si 1.0%; Mn 1.2%; P 0.0010%; S 0.006%; Cr 29%; Ni21.0%; Mo 0.60%; Al 0.026%; Co 0.12%; Ti 0.0015%; Nb 0.70%; V 0.065%; W 1.25%; Ca 0.0025%; Fe 45.5%, smelting it into molten steel and casting it into a steel ingot, this steel ingot is a new type of heat-resistant steel.
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The invention relates to novel heat resistant steel which belongs to the technical field of alloy steel. The heat resistant steel is characterized in that a small amount of rare earth elements and some other trace elements are added to ordinary heat resistant steel, so that the use quantity of metal nickel is reduced, the performance of the heat resistant steel reaches or exceeds that of the sametype of heat resistant steel containing nickel with high content, and the production cost of the heat resistant steel is reduced. The novel heat resistant steel has higher temperature intensity, goodanti-oxidation performance, good corrosion resistant performance, good wearproof performance, good creep resistant performance and good impact resistant performance. The highest working temperature ofthe novel heat resistant steel can reach 1200 DEG C and the novel heat resistant steel is widely suitable for furnace rollers of stainless steel super-fusion furnaces, furnace rollers and radiant tubes of various annealing furnaces and the like.
Description
Technical field [0001] The invention belongs to the technical field of alloy steel and relates to a novel heat-resistant steel. Background technique [0002] In the prior art, the austenitic heat-resistant steel mainly uses chromium-nickel as the alloying element, which is characterized by high nickel content in the steel, and the high price of nickel makes the production cost of the heat-resistant steel relatively high. The commonly used heat-resistant steel models in this industry are: ZG45Ni35Cr26, ZG35Cr18Ni24Si2, Cr25Ni35. Contents of the invention [0003] The object of the present invention is to provide a new type of heat-resistant steel with added trace rare earth elements, low nickel content, high temperature resistance, corrosion resistance, wear resistance, oxidation resistance, creep resistance, impact resistance and low production cost. This kind of heat-resistant steel can be used instead of ZG45Ni35Cr26, ZG35Cr18Ni24Si2, Cr25Ni35, and the performance of it...
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IPC IPC(8): C22C38/54
Inventor 李曙生孔德礼刘汉伯孔维民王崇高
Owner 泰州市永昌冶金设备有限公司