阅读说明：本技术 一种激光复合制造炉卷辊抗高温压入功能层合金材料及工艺方法 (High-temperature-resistant press-in functional layer alloy material for laser composite manufacturing furnace roller and process method ) 是由 王晓佳 陈海涛 董思远 于 2021-08-18 设计创作，主要内容包括：本发明属于表面处理技术领域,涉及一种激光熔覆合金功能层材料,特别是涉及一种激光复合制造炉卷辊抗高温压入功能层合金材料及工艺方法。一种激光复合制造炉卷辊抗高温压入功能层合金材料,该合金材料包括以下质量百分数的组分组成：C：1.0%～2.0%,Cr：25.0%～30.0%,W：5.0%～10.0%,Mo：0.5%～1.5%,Mn：0.5%～1.5%,Si：1.0%～2.0%,Ni：1.0%～5.0%,Fe：1.0%～5.0%,Co：余量。本发明提供一种激光复合制造炉卷辊抗高温压入功能层合金材料,该合金材料以钴基合金为基体,加入W元素,增加C元素,形成硬度较高的碳化物,增加合金的高温红硬性,同时加入Cr、Mo元素,提升炉卷辊表面抗高温腐蚀能力。(The invention belongs to the technical field of surface treatment, relates to a laser cladding alloy functional layer material, and particularly relates to a high-temperature-resistant press-in functional layer alloy material for a laser composite manufacturing furnace roller and a process method. The high-temperature-resistant press-in functional layer alloy material for the laser composite manufacturing furnace roller comprises the following components in percentage by mass: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance. The invention provides a high-temperature-resistant press-in functional layer alloy material for a laser composite manufacturing furnace roller.)

1. The high-temperature-resistant press-in functional layer alloy material for the laser composite manufacturing furnace roller is characterized by comprising the following components in percentage by mass: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

2. A preparation method of a high-temperature-resistant press-in functional layer of a laser composite manufacturing furnace roller is characterized by comprising the following steps:

step 1, presetting a layer of transition layer material with the thickness of 1.2-1.5mm on the surface of a furnace roller in a Co-Cr-W alloy powder presetting mode, selecting a fiber laser for scanning cladding, and then processing to reserve the thickness of the transition layer to be 1.0-1.2 mm;

and 2, selecting a fiber laser, and performing laser cladding on functional layer alloy powder on the transition layer in a powder presetting mode, wherein the cladding process comprises the following steps: power: 2000-: 3.0mm, a focal length of 280-350mm, a scanning speed of 1000-1200mm/min, a single-layer thickness of 0.6-0.8mm, and a lap joint rate of 40-60%.

3. The method for preparing the high-temperature-resistant press-in functional layer of the laser composite manufacturing furnace roller according to claim 2, wherein the Co-Cr-W alloy powder in the step 1 comprises the following components: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 1.0% -5.0%, Mo: 0.5% -1.5%, Al: 0.1% -1.0%, Mn: 0.1% -1.0%, Si: 1.0% -1.5%, Fe: 1.0% -5.0%, Ni: 1.0% -5.0%, Co: and (4) the balance.

4. The method for preparing the high-temperature-resistant press-in functional layer of the laser composite manufacturing furnace roller according to claim 2, wherein the functional layer alloy powder in the step 2 comprises the following components: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

Technical Field

The invention belongs to the technical field of surface treatment, relates to a laser cladding alloy functional layer material, and particularly relates to a high-temperature-resistant press-in functional layer alloy material for a laser composite manufacturing furnace roller and a process method.

Background

The furnace roller is a key part when rolling the steel coil, and because the furnace roller is in contact with the steel coil for a long time at high temperature, the roller surface has a large number of defects such as cracks, oxidation, nodulation, pits and the like, thereby directly influencing the surface quality of the head and the tail of the steel coil rolling plate. Therefore, the high-temperature red hard furnace roller has great significance for prolonging the service life of the roller surface, improving the product quality and developing the steel plate roll rolling technology.

At present, the furnace roller which is off-line and needs to be repaired is mainly repaired in a surfacing mode and also repaired in a spraying mode. However, the roller surface repaired by the surfacing mode has obvious stress cracks, even closed cracks and peeling phenomena, and the roller surface has a large number of pits due to poor high-temperature red hardness, so that the nodulation is caused, and the quality of the plate surface of the coiled plate is influenced. The roller surface is repaired by a spraying mode, although some materials resisting press-in can be sprayed, the interface bonding force is weak, the coating is thin, and the coating is easy to crack and peel under the action of high temperature and contact with a plate coil.

The laser cladding technology is an efficient and convenient surface modification technology and has the following advantages: (1) the dilution rate of the cladding layer is low; (2) the heat influence on the base material is small; (3) the thickness of the cladding layer is controllable; (4) the interface bonding force is strong; (5) fine and compact structure and excellent performance. The laser cladding process is adopted to clad the functional layer, so that the coating has high interface binding force, the coating is prevented from peeling off, a compact tissue structure can be obtained, and the performance of the functional layer is improved. More importantly, the high-temperature-resistant press-in functional layer of the laser composite manufacturing furnace roller can meet the red hardness of the furnace roller during long-time use at high temperature, prevent the generation of roller surface pits, reduce the roller surface nodulation probability and further improve the head and tail quality of the rolled plate.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a high-temperature-resistant press-in functional laminated alloy material for a laser composite manufacturing furnace roller through repeated research and a large number of experiments.

In order to achieve the purpose, the invention adopts the following technical scheme.

The high-temperature-resistant press-in functional layer alloy material for the laser composite manufacturing furnace roller comprises the following components in percentage by mass: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

A preparation method of a high-temperature-resistant press-in functional layer of a laser composite manufacturing furnace roller comprises the following steps:

step 1, presetting a layer of transition layer material with the thickness of 1.2-1.5mm on the surface of a furnace roller in a Co-Cr-W alloy powder presetting mode, selecting a fiber laser to carry out scanning cladding, and then processing to reserve the thickness of the transition layer to be 1.0-1.2 mm.

And 2, selecting a fiber laser, and performing laser cladding on functional layer alloy powder on the transition layer in a powder presetting mode, wherein the cladding process comprises the following steps: power: 2000-: 3.0mm, a focal length of 280-350mm, a scanning speed of 1000-1200mm/min, a single-layer thickness of 0.6-0.8mm, and a lap joint rate of 40-60%.

Further, the components of the Co-Cr-W alloy powder in the step 1 are as follows: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 1.0% -5.0%, Mo: 0.5% -1.5%, Al: 0.1% -1.0%, Mn: 0.1% -1.0%, Si: 1.0% -1.5%, Fe: 1.0% -5.0%, Ni: 1.0% -5.0%, Co: the balance;

further, the functional layer alloy powder in the step 2 comprises the following components: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

Compared with the prior art, the invention has the beneficial effects of.

(1) The W element is added, the C element is added, carbide with higher hardness is formed, and the high-temperature red hardness of the functional layer alloy can be greatly improved.

(2) By adopting a laser cladding mode, good metallurgical bonding with a matrix can be formed, the structure is refined, the interface bonding force is improved, and the coating is prevented from peeling off.

Detailed Description

The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The high-temperature-resistant press-in functional layer alloy material for the laser composite manufacturing furnace roller comprises the following components in percentage by mass: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

A preparation method of a high-temperature-resistant press-in functional layer of a laser composite manufacturing furnace roller comprises the following steps:

step 1, presetting a layer of transition layer material with the thickness of 1.2-1.5mm on the surface of a furnace roller in a Co-Cr-W alloy powder presetting mode, selecting a fiber laser to carry out scanning cladding, and then processing to reserve the thickness of the transition layer to be 1.0-1.2 mm.

And 2, selecting a fiber laser, and performing laser cladding on functional layer alloy powder on the transition layer in a powder presetting mode, wherein the cladding process comprises the following steps: power: 2000-: 3.0mm, a focal length of 280-350mm, a scanning speed of 1000-1200mm/min, a single-layer thickness of 0.6-0.8mm, and a lap joint rate of 40-60%.

Further, the components of the Co-Cr-W alloy powder in the step 1 are as follows: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 1.0% -5.0%, Mo: 0.5% -1.5%, Al: 0.1% -1.0%, Mn: 0.1% -1.0%, Si: 1.0% -1.5%, Fe: 1.0% -5.0%, Ni: 1.0% -5.0%, Co: the balance;

further, the functional layer alloy powder in the step 2 comprises the following components: c: 1.0% -2.0%, Cr: 25.0% -30.0%, W: 5.0% -10.0%, Mo: 0.5% -1.5%, Mn: 0.5% -1.5%, Si: 1.0% -2.0%, Ni: 1.0% -5.0%, Fe: 1.0% -5.0%, Co: and (4) the balance.

Example 1.

1. Removing factors influencing cladding quality such as oil stain, oxides, fatigue layers, surface cracks and the like on the surface of the furnace roller, cladding a layer of transition layer alloy material at a specified position by using a fiber laser, and keeping the thickness of 1.0mm after processing.

2. Scanning and cladding a functional layer on the transition layer by using a laser cladding technology and a powder presetting mode, wherein the functional layer comprises the following alloy components in percentage by mass: c: 1.4%, Cr: 29.5%, W: 8.25%, Mo: 1.0%, Mn: 1.0%, Si: 1.45%, Ni: 3.0%, Fe: 3.0%, Co: and (4) the balance. Cladding thickness is 0.8 mm.

3. And processing the functional layer after cladding, and keeping the thickness of 0.6 mm.

Example 2.

1. Removing factors influencing cladding quality such as oil stain, oxides, fatigue layers, surface cracks and the like on the surface of the furnace roller, cladding a layer of transition layer alloy material at a specified position by using a fiber laser, and keeping the thickness of 1.0mm after processing.

2. Scanning and cladding a functional layer on the transition layer by using a laser cladding technology and a powder presetting mode, wherein the functional layer comprises the following alloy components in percentage by mass: c: 1.5%, Cr: 29%, W: 8.0%, Mo: 1.2%, Mn: 1.2%, Si: 1.5%, Ni: 3.5%, Fe: 2.5%, Co: and (4) the balance. Cladding thickness is 0.7 mm.

3. And processing the functional layer after cladding, and keeping the thickness of 0.5 mm.

The furnace roller after cladding the functional layer has good metallurgical bonding, no cracks on the surface, and uniform and consistent hardness higher than that of the original substrate. After the surfacing repair roller is used in a machine, after the surfacing repair roller is used at a high temperature for a long time, the high-temperature-resistant pressing-in performance of the surface is good, the roller surface has no pits, and the nodulation condition is greatly reduced compared with that of the original roller surface, so that the quality of the head and the tail of a steel plate coil is obviously improved, the using effect is more than 3 times that of surfacing repair of the roller surface, and the rejection rate is greatly reduced.