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Powder alloy and production technique thereof

A powder alloy and production process technology, which is applied in the field of powder alloy and its production process, can solve the problems of high ceramic inclusion content and unstable material properties, and achieve the effect of improving powder quality

Inactive Publication Date: 2015-04-29
JIANGSU PLAZA PREMIUM ELECTRIC INSTR
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Problems solved by technology

Under the condition that there are no large extruders and large isothermal forging machines in our country, the forming process route of HIP + sheathed die forging has been used to forge full-size turbine discs of φ420mm and φ630mm, but the problem is the ceramic inclusions in the powder. Higher content, resulting in less stable material properties

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  • Powder alloy and production technique thereof
  • Powder alloy and production technique thereof

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Embodiment Construction

[0019] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the application.

[0020] A powder alloy formula, the formula ratio is as follows, C is 0.04-0.09%, Cr is 12-14%, Co is 7-9%, W is 3.3-3.7%, Mo is 3.3-3.7%, Al is 2.3- 3.7%, Ti is 3.3-2.7%, Nb is 3.3-3.7%, B is 0.006-0.015%, Zr is 0.03-0.07%, and Ni is the balance.

[0021] see figure 1 As shown, a powder alloy production process, the process includes the following steps:

[0022] (1) The master alloy is smelted, smelted in a 200kg vacuum induction f...

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Abstract

The invention relates to the technical field of alloy production, particularly a powder alloy and a production technique thereof. The powder alloy comprises 0.04-0.09% of C, 12-14% of Cr, 7-9% of Co, 3.3-3.7% of W, 3.3-3.7% of Mo, 2.3-3.7% of Al, 3.3-2.7% of Ti, 3.3-3.7% of Nb, 0.006-0.015% of B, 0.03-0.07% of Zr and the balance of Ni. The powder alloy is a highly-alloyed r'-phase precipitation-reinforced nickel-base high-temperature alloy, wherein the r' volume content is 50-55%, and the r' formed element content (atomic) is 28%. The powder alloy is a turbine disk material at the highest strength level under the operating condition of 650 DEG C at present. The powder alloy not only can be used for high / low-pressure turbine disks, but also can be used for gas compressor disks, turbine shafts, turbine baffle rings, high-temperature sealing parts and other high-temperature parts. The powder alloy is prepared by a plasma rotating electrode powder manufacturing apparatus, and the powder quality is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of alloy production, in particular to a powder alloy and a production process thereof. Background technique [0002] Precision alloys are metal materials with special physical properties, which are used in the manufacture of electronics, electrical devices, precision instruments and meters, etc. It is an indispensable material in the electrical industry, electronics industry, precision instrument industry and automatic control systems. Precision alloy strips cannot be used for high temperature parts such as compressor discs, turbine shafts, turbine retaining rings, high temperature seals, etc. According to different application requirements, HIP (hot isostatic pressing) direct forming, HIP + die forging can be used for powder superalloys , HIP + isothermal forging and extrusion + isothermal forging and other different process routes. In the absence of large extruders and large isothermal forging machines in...

Claims

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Application Information

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IPC IPC(8): C22C19/05B22F9/08B22F3/14C22F1/10
Inventor 叶百发
Owner JIANGSU PLAZA PREMIUM ELECTRIC INSTR
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