A tire mold anti-friction plate and its manufacturing process

Abstract

The invention provides a manufacturing technology of a tyre mold antifriction plate. The manufacturing technology comprises the steps of (1) uniformly coating a to-be-treated surface of a metal matrix with cladding powder; (2) carrying out laser treatment on the cladding powder on the to-be-treated surface of the metal matrix through a laser scanning treatment technology, wherein laser treatment in the step (2) comprises the specific steps of a) regulating laser power to be 100 W to 5 KW, spot diameter to be 0.1 mm to 6 mm, scanning speed to 800 mm / min to 1500 mm / min and distance of adjacent light spots to be 0.5 mm, and then, carrying out laser scanning on the to-be-treated surface of the metal matrix once, so as to obtain a pretreated metal matrix; and b) putting the pretreated metal matrix in the step (a) in a hydrogen atmosphere, and then, carrying out laser scanning on the pretreated metal matrix once, so as to obtain the metal matrix subjected to two-time treatment; (3) coating the to-be-treated surface of the metal matrix subjected to laser scanning treatment in the step (2) through a coating technology, so as to obtain a coating layer; and (4) carrying out laser treatment on the coating layer in the step (3) through the laser scanning treatment technology.

Description

technical field [0001] The invention relates to an anti-friction plate and a manufacturing process thereof, in particular to an anti-friction plate and a manufacturing process thereof in the rubber tire mold manufacturing industry. [0002] technical background [0003] In the rubber tire mold manufacturing industry, single-sided and multi-sided anti-friction plates are the main components for the production of tire molds. It not only has to bear a large external force during work, but also has good self-lubricating properties and a small friction coefficient to ensure its long service life. Traditional anti-friction plates are usually made of manganese steel plates. The metallographic structure of manganese steel plates is rough, and the lubricity and wear resistance are not good, which increases the force of the mold during the opening and closing process, making the use of anti-friction plates The service life is greatly reduced, so it needs to be lubricated with engine o...

AI Technical Summary

Problems solved by technology

Traditional anti-friction plates are usually made of manganese steel plates. The metallographic structure of manganese steel plates is rough, and the lubricity and wear resistance are not good, which increases the force of the mold during the opening and closing process, making the use of anti-friction plates The service life is greatly reduced, so it is necessary to use engine oil frequently for lubrication, and the use of oil products is the most taboo in the production of rubber tires

After adopting the process of Q235 steel plus electroplated copper film, its performance and life have been improved, but due to the limited thickness of the electroplated copper film (usually less than 10 microns), it is not enough to greatly improve the friction between the anti-friction material and the steel substrate. Combination performance; unilaterally increase the thickness of the copper plating film, and it is easy to cause problems such as hydrogen accumulation to cause bubbling of the copper plating film

The conventional solution is to add a substance with a low coefficient of friction on the surface of the antifriction plate, such as graphite, etc., but there is a compatibility problem between the graphite and the base material of the antifriction plate, so it is often necessary to add more substances to solve such problems