Material used in ballscrew

Abstract

The invention provides a material used in a ballscrew. The material comprises the following components in percentage by weight: 0.58-0.63% of carbon element, 0.5-0.80% of manganese element, less than or equal to 0.015% of phosphorus element, less than or equal to 0.015% of sulfur element, 0.15-0.35% of silicon element, 0.10-0.25% of chromium element, less than or equal to 0.20% of copper element, less than or equal to 0.10% of molybdenum element, less than or equal to 0.20% of nickel element, less than or equal to 0.05% of vanadium element, 0.020-0.040% of aluminum element, and the balance iron element. Steel smelted by adopting the alloy-elements-containing material of the invention overcomes weaknesses of GCr15 steel completely, improves internal organizational structure of the steel, reserves the original advantages of the GCr15 steel, is easy-cutting and easy-calendering, and improves the quenching brittleness and deformation ability; in addition, the material of the invention is particularly suitable for production adopting a cold-rolling technology; therefore, the traditional productive technology of the ballscrew is completely changed, and excellent social and economic effects are created.

Description

【Technical field】 [0001] The invention belongs to the technical field of rolling functional components, and in particular relates to a material used for a ball screw. 【Background technique】 [0002] Rolling functional components such as ball screw pairs are important components of machine tools and even numerical control devices. Its accuracy and service life directly affect the machining accuracy and positioning accuracy of the machine tool. How to improve the accuracy and service life of rolling functional components such as ball screw pairs, and improve their manufacturability to meet market demand is a top priority. [0003] At present, most domestic manufacturing enterprises use GCr15 bearing steel to manufacture rolling functional parts such as ball screw pairs. Since GCr15 bearing steel is made by adding Cr elements on the basis of T10A steel, although the hardenability of the steel is improved, and the Cr element dissolves into Fe3C to form a composite Fe.Cr, which...

AI Technical Summary

Problems solved by technology

However, due to the addition of a single weak carbide-forming element Cr to the steel, its hardenability and quenching deformation performance are relatively inferior to CrWMn steel. When the quenching temperature reaches 830-850 ° C, there are still a lot of retained austenite after treatment.

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