High-alloy steel cobalt-containing ejecting head

A technology of high-alloy steel and elements, which is applied in the field of high-alloy steel cobalt-containing perforated plugs, can solve the problems of unfavorable enterprises for mass production, high price, and high production cost, and achieve the advantages of increased strength, reduced production costs, and good temperature resistance. Effect

Inactive Publication Date: 2014-06-11
江苏优泽科技有限公司
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Problems solved by technology

On the one hand, it must be purchased with a large amount of foreign exchange, and the price is relatively expensive; on the other hand, in actual use, when the imported perforated plug is worn into stainless steel seamless steel pipe, due to the hardness of the material, it is necessary to wear two or three stainless steel pipes. When the seamless steel pipe is scrapped, it is not conducive to the mass production of the enterprise, and the production cost is high

Method used

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Embodiment Construction

[0006] The high-alloy steel cobalt-containing plug is mainly composed of carbon, iron, chromium, and molybdenum. It is characterized in that: the composition of each element is as follows: C is 0.19-0.39%, and Cr is 0.2- 1.4%, Ni is 0.35-2.0%, Co is 0.3-1.8%, Si is 0.1-1.0%, Mn is 0.1-0.9%, Mo It is 0.3-2.3%, W is 0.5-4%, Nb is 0.1-1.3%, and the rest is Fe and a small amount of other elements. During specific implementation, suitable materials are prepared according to the formula ratio of the present invention, and are added into the furnace according to the requirements of use. When the plug is released from the furnace, the plug blank can be cast or directly produced into a forging. When producing castings, after the casting risers are cut off, a certain machining allowance should be left. When produced as forgings, the forgings should not have overburning, and then mechanical processing and plug heat treatment are carried out as required. During the heat treatment of ...

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Abstract

The invention discloses a high-alloy steel cobalt-containing ejecting head mainly comprising carbon, iron, chromium and molybdenum. The high-alloy steel cobalt-containing ejecting head comprises the following elements in percentage by weight: 0.19-0.39% of C, 0.2-1.4% of Cr, 0.35-2.0% of Ni, 0.3-1.8% of Co, 0.1-1.0% of Si, 0.1-0.9% of Mn, 0.3-2.3% of Mo, 0.5-4% of W, 0.1-1.3% of Nb and the balance of Fe and a small amount of other elements. Alloy elements are added into the high-alloy steel cobalt-containing ejecting head disclosed by the invention, so that the strength of a punching ejecting head is greatly improved, and the punching ejecting head can meet the necessary rigidity for punching and has good temperature resistance at the same time; when the ejecting head is used for punching a stainless steel seamless steel tube, the service life of the ejecting head is two to three times that of a foreign product of the same type, so that the production cost is greatly reduced.

Description

technical field [0001] The invention relates to a perforated plug for rolling seamless steel pipes, in particular to a cobalt-containing perforated plug mainly used for processing high-alloy steel tubes used in power plant boilers. technical background [0002] In many metallurgical industries in my country, when piercing seamless steel pipes, perforated plugs are used. This type of perforated plugs generally can only penetrate steel pipes with relatively soft materials. If you want to produce boiler tubes used in boilers, it is difficult to penetrate. This type of steel generally uses stainless steel as the base material, which has strong rigidity and hardness. When producing such products, foreign perforated items are generally used. On the one hand, it must be purchased with a large amount of foreign exchange, and the price is relatively expensive; on the other hand, in actual use, when the imported perforated plug is worn into stainless steel seamless steel pipe, due...

Claims

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Application Information

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IPC IPC(8): C22C38/52
Inventor 马中亮
Owner 江苏优泽科技有限公司
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