阅读说明：本技术 一种高耐磨复合式铸造锤盘及其制备工艺 (High-wear-resistance composite casting hammer disc and preparation process thereof ) 是由 张福全 陈玉祥 陈焕 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种高耐磨复合式铸造锤盘及其制备工艺,包括：锤盘母体,所述锤盘母体的外表面开设有倒角,且在所述锤盘母体的倒角处通过焊接的方式复合有高强度耐磨钢板,并且所述焊接所形成的焊层均匀的分布于所述倒角的两侧,其制备工艺采用先熔炼浇铸成锤盘母体,再用数控火焰切割以及卷板机来加工出高强度耐磨钢板,最后通过焊接的方式将其牢固的结合在一起,通过上述方式,本发明能够根据实际使用过程中的磨损要求来定制高强度耐磨钢板的厚度,一旦使用后就不需要后期的停机维护,降低使用成本,同时制备工艺相对简单,焊接的工作量相比于又有的焊接耐磨层大大降低,且焊接的质量更高,整体抗磨损能力较高,适合应用于硬度较高、难破碎的矿料。(The invention discloses a high-wear-resistance composite casting hammer disc and a preparation process thereof, wherein the preparation process comprises the following steps: according to the invention, the thickness of the high-strength wear-resistant steel plate can be customized according to the wear requirement in the actual use process, the later-stage shutdown maintenance is not required once the high-strength wear-resistant steel plate is used, the use cost is reduced, the preparation process is relatively simple, the welding workload is greatly reduced compared with that of other welding wear-resistant layers, the welding quality is higher, the integral wear resistance is higher, and the high-strength wear-resistant steel plate is suitable for being applied to welding with higher hardness, Refractory mineral aggregates.)

1. The utility model provides a high wear-resisting combined type casting hammer disk which characterized in that includes: the outer surface of the hammer disc matrix is provided with a chamfer, a high-strength wear-resistant steel plate is compounded at the chamfer of the hammer disc matrix in a welding mode, and welding layers formed by welding are uniformly distributed on two sides of the chamfer.

2. The high abrasion composite cast hammer plate of claim 1, wherein the hammer plate matrix is ZG 35.

3. The high-wear-resistance composite cast hammer disc of claim 1, wherein the high-strength wear-resistance steel plate is made of NM 500.

4. The high abrasion resistant composite cast hammer disc of claim 1, wherein the welding layer is welded with ER50-6 welding wire.

5. A preparation process of a high-wear-resistance composite casting hammer disc is characterized by comprising the following steps:

(1) preparing a parent material: smelting ZG35 steel into molten steel by adopting an intermediate frequency furnace, casting the molten steel into a cavity of a mold at the temperature of 1550-;

(2) preparing a steel plate: cutting an NM5000 steel plate into required length, width and thickness by using numerical control flame, and rolling the steel plate into a circle by using a plate rolling machine to obtain a high-strength wear-resistant steel plate;

(3) welding: heating the high-strength wear-resistant steel plate and the hammer disc matrix to 180-220 ℃, welding the high-strength wear-resistant steel plate and the hammer disc matrix into a whole through an ER50-6 welding wire, and eliminating welding stress by adopting a magnetomotive instrument to finally obtain the high-wear-resistant composite cast hammer disc.

6. The process for preparing the high-wear-resistance composite casting hammer disc according to claim 5, wherein the normalizing treatment comprises the following steps: raising the temperature to 840-860 ℃ at the speed of 140-160 ℃/h, keeping the temperature for 3.5-5h, discharging, and naturally cooling to the normal temperature.

7. The process for preparing the high-wear-resistance composite casting hammer disc according to claim 5, wherein the chamfer length of the chamfer treatment is half of the thickness of the hammer disc matrix.

8. The process for preparing a high wear-resistant composite cast hammer disc according to claim 5, wherein the size of the circle matches the outer circumference of the hammer disc matrix.

Technical Field

The invention relates to cement and mining mechanical equipment, in particular to a high-wear-resistance composite casting hammer disc.

Background

The hammer crusher is suitable for crushing medium-hardness materials such as limestone, slag, coke, plum and other materials in the industrial departments such as cement, chemical industry, electric power, metallurgy and the like. The rotor is one of the important parts of the hammer crusher, and the hammer disks are the core parts of the rotor, and the service life of the rotor is mainly determined by the hammer disks. The hammer disks produced on the market are mainly divided into ZG35# surfacing or steel plate disks plus surfacing, and because surfacing layers belong to high-chromium cast iron components, the hardness is high, the impact resistance is poor, the thickness of the surfacing layers is generally not more than 15mm (the surfacing layers are too thick and are easy to peel off after impact is received), if mineral materials with high hardness and difficult to break are encountered, the surfacing layers can be worn out quickly in the using process, and then the hammer disks need to be stopped to be resurfaced again to maintain the use. The later maintenance work load is big, and the maintenance cost is high, and work efficiency is poor.

Disclosure of Invention

The invention mainly solves the technical problem of providing a high-wear-resistance combined type casting hammer disc and a preparation process thereof, the thickness of a high-strength wear-resistance steel plate can be customized according to the wear requirement in the actual use process, the later-stage shutdown maintenance is not needed once the hammer disc is used, the use cost is reduced, the preparation process is relatively simple, the welding workload is greatly reduced compared with that of other welding wear-resistance layers, the welding quality is higher, the integral wear-resistance is higher, and the hammer disc is suitable for mineral aggregates with higher hardness and difficult crushing.

In order to solve the technical problems, the invention adopts a technical scheme that: provided is a high wear-resistant composite cast hammer plate, comprising: the outer surface of the hammer disc matrix is provided with a chamfer, a high-strength wear-resistant steel plate is compounded at the chamfer of the hammer disc matrix in a welding mode, and welding layers formed by welding are uniformly distributed on two sides of the chamfer.

In a preferred embodiment of the present invention, the hammer plate is made of ZG35 material.

In a preferred embodiment of the present invention, the high strength wear resistant steel plate is made of NM500 material.

In a preferred embodiment of the invention, the welding layer is formed by welding with an ER50-6 welding wire.

In order to solve the technical problem, the invention adopts another technical scheme that: the preparation process of the high-wear-resistance composite casting hammer disc specifically comprises the following steps:

(1) preparing a parent material: smelting ZG35 steel into molten steel by adopting an intermediate frequency furnace, casting the molten steel into a cavity of a mold at the temperature of 1550-;

(2) preparing a steel plate: cutting an NM5000 steel plate into required length, width and thickness by using numerical control flame, and rolling the steel plate into a circle by using a plate rolling machine to obtain a high-strength wear-resistant steel plate;

(3) welding: heating the high-strength wear-resistant steel plate and the hammer disc matrix to 180-220 ℃, welding the high-strength wear-resistant steel plate and the hammer disc matrix into a whole through an ER50-6 welding wire, and eliminating welding stress by adopting a magnetomotive instrument to finally obtain the high-wear-resistant composite cast hammer disc.

In another preferred embodiment of the present invention, the normalizing process: raising the temperature to 840-860 ℃ at the speed of 140-160 ℃/h, keeping the temperature for 3.5-5h, discharging, and naturally cooling to the normal temperature.

In another preferred embodiment of the present invention, the chamfering length of the chamfering process is half of the thickness of the hammer disk parent body.

In another preferred embodiment of the invention, the size of the circle matches the outer perimeter of the disc matrix.

The invention has the beneficial effects that:

1. the abrasion layer on the surface of the hammer disc matrix is changed into the high-strength abrasion-resistant steel plate from the original surfacing layer, and the abrasion-resistant steel plate is welded on the hammer disc body in a welding mode, so that the maintenance and the repair are not needed in the later period, the use cost is reduced, and meanwhile, the high-strength abrasion-resistant steel plate has better impact resistance, so that the thickness of the high-strength abrasion-resistant steel plate can be customized according to the actual abrasion requirement, and the high-strength abrasion-resistant steel plate is suitable for mineral aggregates with lower impact and higher hardness and has a wide application range;

2. through adopting to smelt the casting hammer disks parent, the chamfer of machine tooling formation hammer disks parent again, make the circular high strength wear-resisting steel sheet of customization size with the steel sheet through numerical control flame cutting and plate bending machine again, finally weld as an organic whole, its welded work load also than original welding wearing layer greatly reduced, production technology is simple relatively, and the customer is for zero at the in-process maintenance cost of follow-up use, and durable type is extremely strong.

Drawings

FIG. 1 is a front view of a high wear resistant composite cast hammer disk in accordance with a preferred embodiment of the present invention;

FIG. 2 is a side view of a high wear resistant composite cast hammer disk in accordance with a preferred embodiment of the present invention;

the parts in the drawings are numbered as follows: 1. 2, high-strength wear-resistant steel plate, 2, hammer disc matrix, 3, and a welding layer.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.

Referring to fig. 1-2, an embodiment of the present invention includes:

a high wear resistant composite cast hammer plate comprising: the outer surface of the hammer disc matrix is provided with a chamfer, a high-strength wear-resistant steel plate is compounded at the chamfer of the hammer disc matrix in a welding mode, and welding layers formed by welding are uniformly distributed on two sides of the chamfer.

The hammer plate matrix is made of ZG35 material, and has excellent plasticity and good strength, good welding performance, and low production cost, and can be used only by normalizing in the heat treatment process.

The high-strength wear-resistant steel plate is made of NM500 materials, has extremely high wear resistance, can reach 500HBW in Brinell hardness, can greatly prolong the service life of the hammer disc matrix, reduces maintenance and shutdown caused by maintenance, and reduces use cost.

The welding layer is formed by welding ER50-6 welding wires.