Nickel-base high-temperature alloy material for guide roller and heat treatment process thereof
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A nickel-based superalloy, aging heat treatment technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of guide roller material wear, cracks, failure, etc., to improve wear resistance, service life, large application value effect
Inactive Publication Date: 2007-09-12
TSINGHUA UNIV
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[0005] The purpose of the present invention is to provide a new type of nickel-based superalloy material for guide rollers and its heat treatment
Method used
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Embodiment 1
[0023] According to the following chemical composition: C 0.15wt%, Cr 11.7wt%, Nb 1.6wt%, W 7.9wt%, Mo 3.5wt%, B 0.02wt%, Al 3.5wt%, Ti 2wt%, Ce 0.07wt%, Fe 11.3wt%, Si 0.43wt%, Mn 0.1wt%, Ni balance.
[0024] Ordinary vacuum casting, the vacuum degree is 0.1Pa, the mold is iron mold, the melting temperature is 1400-1500°C, the melting time is 1.5h, the mold shell temperature is 200-300°C, a new nickel-based superalloy is smelted, and then cast The alloy is heat treated at 1140°C, 4h, and air-cooled.
Embodiment 2
[0026] According to the following chemical composition: C 0.15wt%, Cr 14wt%, Nb 2.5wt%, W 6wt%, Mo 3wt%, B 0.02wt%, Al 4.5wt%, Ti 3wt%, Ce 0.07wt%, Fe 9.5wt% , Si 0.43wt%, Mn 0.1wt%, Ni balance. Carry out heat treatment by embodiment 1 technique.
Embodiment 3
[0028] Example 3 is the same as Example 1 in terms of operation steps and experimental parameters, and the difference from Example 1 is that the as-cast alloy is heat treated at 1200° C. for 4 hours and air-cooled.
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Abstract
This invention relates to a new Ni base high temperature alloyed material used in rolls and its hot process technology, which takes K403 alloy as the base and adjusts composition of the alloy to eliminate Co element and adds W, Nb and Fe suitably to melt it in vacuum, then carries out different hot processes to get the nickel base alloy, which replaces traditional roll materials and has the performance of anti-high temperature and oxidation, anti-hot impact and high temperature intensity to prolong its life time.
Description
technical field [0001] The invention belongs to the field of new material preparation and application, in particular to a novel nickel-based superalloy material for a guide roller and a heat treatment process thereof. Background technique [0002] The guide roller is an important part of the rolling mill, which is used to transport the profiles and wires into the rolling mill smoothly. As the rolling speed of the rolling mill increases, sliding guides (guide rolls) are gradually replaced by rolling guides. Because of the complex working environment and the short service life of guide rollers, guide rollers have become the main consumption parts on high-speed wire rod mills. At present, there are three kinds of guide roller materials commonly used at home and abroad. The first is heat-resistant steel with austenitic structure; the second is wear-resistant steel or wear-resistant cast iron with martensitic structure; the third is hard alloy. Austenitic heat-resistant steel ...
Claims
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