CN2586547Y

CN2586547Y - Duromer coated roller

Info

Publication number: CN2586547Y
Application number: CN 02204235
Authority: CN
Inventors: 熊光仪
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-21
Filing date: 2002-01-20
Publication date: 2003-11-19
Anticipated expiration: 2012-01-20

Abstract

The utility model relates to a hard coated roller. The hard coated roller uses common carbon steel as a basal body which is made into a roller blank through rough working; a covering layer containing tungsten carbide or superhard material is sprayed and coated or sprayed and welded on a working position on the surface of the basal body, and the thickness of the covering layer can be controlled between 0.1mm and 2mm according to technology requirements. The roller has the characteristics of high quality, low cost and low risk and is suitable for cold roller and hot rollers.

Description

The hard cladding roll

Technical field

The utility model belongs to the milling train technical field, is specifically related to be used for have a tectal roll of hard on the various milling trains.

Technical background

Cold-rolling process generally is raw material rollings on cold-rolling mill, makes various metals or nonmetal wire rod, sheet material or section bar etc., and in this technical process, the quality quality of cold roll directly has influence on product quality and production cost.The cold roll that adopts is to make through being heat-treated to about HRC60 with alloy tool steel, but rolling product roughness and brightness all relatively poor, roll campaign is shorter, production cost is higher.Also has a kind of cold roll made from whole hard alloy now, rolling product quality better significantly than the former, and the service life of roll is also long, but its cost height, simultaneously, easily cracked because of carbide alloy hardness height, careless slightly in operating process it is scrapped, application risk is bigger, has limited the popularity of its application.The roll that a kind of surperficial soldering carbide alloy is arranged at present is to be used for hot rolling, and alloy thickness is general all more than 3mm, be with the alloy sheets soldering on matrix, adhesion deficiency, also easy crackle.

The utility model is at existing cold roll above shortcomings, purpose is to provide a kind of tungsten carbide or tectal hard cladding roll of superhard material of covering on common steel alloy, adhesion is strong, high-quality, low cost, low-risk are applicable to hot and cold roll.

Summary of the invention

This hard cladding roll adopts common straightcarbon steel to make matrix, makes the roller embryo through roughing, and on the cold rolling working position of matrix surface, spraying or surfacing have the cover layer that contains tungsten carbide or superhard material.

Tectal thickness can be controlled at the 0.1mm-2mm scope according to arts demand.Make to have enough adhesions between cover layer and matrix, to satisfy the needed intensity of the operation of rolling, after make after the fine finishining all size roll.This novel coating roll is the organic combination after cover layer and matrix produce metallurgical reaction.

Advantage of the present utility model mainly is:

1, because this hard cladding roll has adopted the version of hard material tungsten carbide and ordinary steel combination, manufacturing cost is a little more than the alloy tool steel roll, but be the several times of alloy tool steel roll service life, facts have proved, use this kind roll to have tangible economic benefit, be applicable to hot and cold roll.

Therefore 2,, have rolling product quality and approaching with it service life of whole hard alloy roller, cracked risk when not operating simultaneously because of this kind rolling face contains tungsten carbide or superhard material.

3, matrix is to adopt spraying or air brushing with tectal the combination, tungsten carbide or superhard material can deeply be combined effectively with matrix, cover layer is a kind of have hard phase and bonding steel alloy body mutually, and cover layer can reach the inaccessiable thinness of hard laminate, in conjunction with firm, be difficult for crackle, performance is better.

Description of drawings

Fig. 1 is that working face is the hard cladding roll structure chart of facing directly;

Fig. 2 is that working face is the hard cladding roll structure chart of cambered surface.

The specific embodiment

Referring to Fig. 1 and 2, the hard cladding roll comprises roller substrate 1 and cover layer 2, and matrix 1 adopts common straightcarbon steel, and cover layer 2 adopts tungsten carbide material, is covered in the working face on matrix 1 surface with spraying or surfacing mode.The shape of cover layer 2 changes with the variation of product, can be facing directly of Fig. 1, also can be cambered surface shown in Figure 2, can also be other shape, as meniscate working face with ribbing, flute profile working face etc., the thickness of cover layer 2 is determined in 2mm with the needs of required rolling product.

Claims

1, hard cladding roll includes the steel roller substrate, it is characterized in that on the cold rolling working position of matrix surface spraying or surfacing have one deck tungsten carbide cover layer.

2, hard cladding roll according to claim 1 is characterized in that described cover layer is the superhard material cover layer.

3, hard cladding roll according to claim 1 and 2 is characterized in that tectal thickness 0.1mm-2mm, and cover layer and matrix are the organic combinations behind the generation metallurgical reaction.