Machining method of wear-resistant high-temperature-resistant nickel-based alloy shaft sleeve

Abstract

The invention discloses a machining method of a wear-resistant high-temperature-resistant nickel-based alloy shaft sleeve. The machining method comprises the steps that a cutter is selected, a PVD coating is arranged on the outer side of the cutter, and a cutting edge is subjected to passivating treatment; materials are prepared, a corresponding blank piece is selected, and the blank piece is preheated; positioning is carried out, specifically, one end face of the blank is fixed and clamped through a chuck or a positioning device; hole machining is carried out on the blank piece on a milling lathe firstly, and an outer circle is machined with a hole as a benchmark; and machining is carried out, rough machining is performed firstly, then finish machining is performed, and the size of the blank piece is machined into the designed size. The PVD coating is arranged on the outer side of the cutter, the PVD coating is better in abrasion resistance and thinner, and the sharpness of the cutting edge of the cutter can be better kept; the cutting of the cutter is more convenient, and the damage amount caused by cutting is small; hole machining is carried out firstly, an outer circle is machined with the hole as a benchmark, and high mutual position precision can be guaranteed; and the added chromium can enhance the tensile strength and hardness of the alloy, and the rare earth can enhance the hot working properties and oxidation resistance of the alloy.

Description

technical field [0001] The invention relates to the technical field of alloy processing, in particular to a method for processing a wear-resistant and high-temperature resistant nickel-based alloy shaft sleeve. Background technique [0002] As an important part of the vulcanizing machine for tire production, the shaft sleeve is used to support the load on the shaft and requires high-strength wear resistance. The existing shaft sleeves used in the vulcanizing machine for tire production use a variety of alloys Although some materials can have high strength, their rigidity is relatively poor and easy to be damaged. Although some are relatively rigid, they have poor wear resistance, so the bushings need to be replaced frequently, so the existing bushings are difficult to perfect. The application is in the vulcanizing machine for tire production, and then the shaft sleeve using nickel-based alloy appeared on the market. [0003] Nickel-based alloys refer to a class of alloys th...

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Problems solved by technology

[0004] High-temperature nickel-based alloys are difficult-to-machine materials, and their processing characteristics: large cutting deformation; large work hardening tendency; large cutting force (cutting force can be as high as 2 to 3 times that of 45 steel); high cutting temperature (up to 750 ~ 1000 ° C) ;Because the alloy contains more alloy elements with high melting point, it is easy to cause tool wear, and the surface quality cannot be guaranteed