Member for conveying high-temperature materials
A technology of high-temperature materials and components, applied in the direction of conveyor objects, metal material coating technology, thin material processing, etc., can solve the problems of low Cr, unsuitable, insufficient oxidation resistance, etc., and achieve excellent durability and remarkable effect , The effect of improving the yield
Active Publication Date: 2014-06-11
NIPPON STEEL CORP
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- Description
- Claims
- Application Information
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Problems solved by technology
Since the Cr content of the mixed coating layer disclosed in Patent Document 16 is low, the oxidation resistance is not sufficient, and it is not suitable as a conveying roller for high-temperature materials above 1100°C.
Method used
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Effect test
Embodiment 1
[0085] First, a mixed powder (test number 1 to test number 14) and alloy powder (test number 15) obtained by mixing alloy powder and carbide powder having the chemical composition shown in Table 1 are prepared. Using these powders, plasma powder build-up welding was used to form a film with a thickness of 0.7mm to 4.5mm on the surface of a base material formed of a Ni-Cr alloy as a test material. In order to confirm the effects of the present invention, the following tests were performed on these test materials.
[0086] Build-up test
[0087] From each of the above test materials, a cylindrical test piece (test material A) with a diameter of 20 mm and a length of 50 mm was cut out so that the surface on which the film was formed becomes the end surface of the test piece. On the other hand, the diameter was cut from SUS304 steel A cylindrical test piece (test material B) with a length of 20mm and a length of 50mm, application figure 1 The testing machine shown is used for stackin...
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Abstract
A high-temperature material transferring member including a coating film formed on a surface of base metal, wherein the coating film is a composite coating film using a mixed powder made up of: a Co-based alloy powder containing, in mass%, 0.03 to 0.6% of C, 0.2 to 3% of Si, 22 to 35% of Cr, and more than 50% of Co; and a Cr carbide powder, the composite coating film is formed by the plasma powder overlaying process. The high-temperature material transferring member has excellent build-up resistance particularly in a gas atmosphere of 1100°C or more. The high-temperature material transferring member has excellent in build-up resistance, oxidation resistance, and heat cracking resistance.
Description
Technical field [0001] The invention relates to a high-temperature material conveying member suitable for supporting and conveying steel materials and other high-temperature materials heated by heat treatment, and more particularly to a conveying roller, skid button and other high-temperature material conveying in a heat treatment furnace member. Background technique [0002] In the manufacturing process of seamless pipes at hot working temperature and the hot working process of other metal materials, for example, in order to transport raw materials or products for processing in a heat treatment furnace, or these materials heated to a high temperature in a heat treatment furnace (hereinafter, Collectively referred to as "high-temperature materials".), roller conveyors and other conveying components are often used. [0003] When conveying high-temperature materials, for example, if slippage occurs between the high-temperature material and the conveying member, adhesion may occur be...
Claims
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IPC IPC(8): C23C24/10B23K9/04B23K10/02B65G39/00C21D1/00C22C19/07
CPCC21D6/02C21D1/06C23C4/06C21D2251/04C21D9/14C21D9/38B23K2201/20B23K9/04C21D6/002B23K10/027C21D6/007C22C19/07C21D2251/02C21D9/08C21D9/28B23K2201/38C21D9/0012B23K2101/20B23K2101/38Y10T428/12063
Inventor 西山佳孝河上忠司小野敏秀米山三树男辰巳佳宏
Owner NIPPON STEEL CORP