阅读说明：本技术 一种用于抛丸室中防丸粒压入钢板的辊道制备方法 (Roller way preparation method for preventing shot from being pressed into steel plate in shot blasting chamber ) 是由 俞美萍 于 2019-08-15 设计创作，主要内容包括：本发明公开了一种用于抛丸室中防丸粒压入钢板的辊道制备方法,包括用45#钢进行调质处理制作母材(1)并加工到设计尺寸,调质处理后的母材(1)硬度为HB220~260；接着,用耐磨焊丝将母材(1)表面堆焊一层单边厚为10mm、硬度HRC≥45的堆焊层(2),并对堆焊后的辊子进行一定的校正和表面加工；最后,待制作好外型模具后,直接将橡胶浇注在堆焊层(2)外制作橡胶层(3)。本发明的优点是可以有效地防止丸粒压入钢板,避免了丸粒磨损辊道而造成的损坏,保证钢板的质量和生产的正常运行。(The invention discloses a roller bed preparation method for preventing pills from being pressed into a steel plate in a shot blasting chamber, which comprises the steps of carrying out quenching and tempering treatment on 45# steel to prepare a base metal (1) and processing the base metal to a design size, wherein the hardness of the base metal (1) after the quenching and tempering treatment is HB220 ~ 260, then carrying out surfacing welding on a surfacing layer (2) with the thickness of a single side of 10mm and the hardness of HRC (Rockwell hardness) of more than or equal to 45 on the surface of the base metal (1) by using a wear-resistant welding wire, carrying out certain correction and surface processing on a roller after surfacing welding, and finally directly pouring rubber outside the surfacing layer (2) to prepare a rubber layer (3) after an appearance die is prepared.)

1. A roller way preparation method for preventing shot pellets from being pressed into a steel plate in a shot blasting chamber is characterized by comprising the following steps:

a. Carrying out thermal refining on 45# steel to manufacture a base material (1) and machining the base material to a designed size, wherein the hardness of the base material (1) after thermal refining is HB220 ~ 260;

b. Surfacing a surfacing layer (2) with the thickness of 10mm on one side and the hardness HRC (Rockwell hardness) of more than or equal to 45 on the surface of the base metal (1) by using a wear-resistant welding wire, and carrying out certain correction and surface processing on a roller subjected to surfacing;

c. after the external mold is manufactured, rubber is directly poured outside the surfacing layer (2) to manufacture the rubber layer (3).

2. The roller way preparation method for preventing pellets from being pressed into a steel plate in a shot blasting chamber according to claim 1, characterized by comprising the following steps:

The hardness of the rubber layer (3) after casting was HB 450.

3. The roller way preparation method for preventing shot from being pressed into a steel plate in a shot blasting chamber according to claim 1 or 2, wherein:

after the rubber layer (3) is manufactured, a group of convex rubber points (3 a) are manufactured on the surface of the rubber layer.

4. the roller way preparation method for preventing shot from being pressed into a steel plate in a shot blasting chamber according to claim 1 or 2, wherein:

the parent metal (1) adopts a solid roller.

5. the roller way for preventing shot from being pressed into a steel plate in a shot blasting chamber according to claim 1 or 2, wherein:

the hardness of the base material (1) after the heat treatment was HB 240.

Technical Field

The invention relates to the technical field of roller ways of shot blasting machines, in particular to a roller way preparation method for preventing shot from being pressed into a steel plate in a shot blasting chamber.

Background

the shot blasting machine is used for simultaneously performing shot blasting on the upper surface and the lower surface of the steel plate to remove the iron scale of the steel plate, so that the requirement that the steel plate enters a heat treatment furnace or the surface is painted is met.

Generally, four throwing heads are respectively arranged at the upper part and the lower part in the shot blasting machine, each throwing head is driven by a 37KW motor, the throwing speed is about 90m/S, the high-speed shot thrown by each throwing head strikes the upper surface and the lower surface of a steel plate, the iron oxide scale on the steel plate can be removed, the types of the steel shots are S330 and S460, the mixed size of the steel shots is 1 ~ 1.5.5 mm, the hardness is 43 ~ 50 HRC, a roller way is also arranged in the shot blasting chamber, the roller way mainly plays a role in transporting the steel plate to enter and exit the shot blasting chamber, and the roller way is easy to wear due to the striking of the shot at the lower part, so a high-hardness wear-resistant surface is generally adopted.

the roller way adopted at present mainly comprises a base material and a group of wear-resistant sleeves coated on the outer ring of the base material, the hardness of the wear-resistant sleeves is HRC45 or so, and the base material is quenched and tempered by 45# steel. Because the surface hardness of the wear-resistant roller is far greater than that of the steel plate, pills between the steel plate and the roller way are easy to press into the steel plate, and are particularly easy to occur when the steel plate with the thickness more than 30mm is produced, so that the quality of the steel plate is objectified, and the quality of the steel plate is seriously influenced; on the other hand, after the wear-resistant sleeves are used for a period of time, gaps are easily formed among the wear-resistant sleeves, so that the base material is abraded by the shot particles, and sometimes, the base material is broken, and the production is directly stopped.

Disclosure of Invention

the invention aims to solve the problem that the roller way of the existing shot blasting machine is easy to press pills into a steel plate, and provides a roller way preparation method for preventing pills from being pressed into the steel plate in a shot blasting chamber, which can effectively prevent the pills from being pressed into the steel plate and ensure the quality of the steel plate and the normal operation of production.

in order to achieve the purpose, the invention adopts the following technical scheme:

A roller way for preventing shot from being pressed into a steel plate in a shot blasting chamber comprises a base material of the roller way, wherein a circle of overlaying layer is arranged on the outer wall of the base material, and the HRC (Rockwell hardness) of the overlaying layer is not less than 45 so as to protect the base material; a circle of rubber layer is arranged outside the surfacing layer to prevent the pills from being pressed into the steel plate.

The preparation method of the roller way for preventing the shot pellets from being pressed into the steel plate in the shot blasting chamber can be carried out according to the following steps:

a. Performing quenching and tempering treatment on 45# steel to manufacture a base material, and processing the base material to a designed size, wherein the hardness after quenching and tempering treatment is HB220 ~ 260 so that the roller has certain strength and toughness;

b. Surfacing a surfacing layer with the thickness of 10mm on one side and the hardness HRC (Rockwell hardness) of more than or equal to 45 on the surface of the base metal by using a wear-resistant welding wire, and carrying out certain correction and surface processing on the roller after surfacing;

c. after the exterior mold is manufactured, rubber is directly poured outside the surfacing layer to manufacture the rubber layer, and the hardness of the finished rubber layer is HB 450.

preferably, the base material is a solid roll.

Compared with the prior art, the invention has the advantages that the rubber layer is added on the outer surface of the roller way, and the pill material is not easy to press into the steel plate due to certain elasticity of the rubber, and the hardness of the rubber layer can ensure that the pill material is not easy to press into the rubber roller; the base material is protected by the overlaying layer, even if the rubber layer is unevenly worn, the roller is not easy to wear and break, and the worn old roller can be repeatedly poured with the rubber layer for repeated use. The invention not only can effectively prevent the pills from being pressed into the steel plate and ensure the quality of the steel plate, but also can protect the roller way from being worn easily, thereby realizing cyclic utilization and saving cost.

Drawings

FIG. 1 is a schematic structural diagram of a roller way for preventing shot particles from being pressed into a steel plate in a shot blasting chamber according to the invention;

FIG. 2 is a schematic diagram of the roller way structure with rubber points of the present invention.

Detailed Description