阅读说明：本技术 一种眼镜板及其制备方法 (Spectacle plate and preparation method thereof ) 是由 崔海霞 陈波 韩猛 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种眼镜板及其制备方法,所述眼镜板采用整体高温浇注成型方法,在与切割环配合的眼镜板的切割面及过料孔处增加耐磨涂层,耐磨涂层与基体整体铸造成型,结合牢固,解决了钎焊、粘结等工艺导致的合金或耐磨层脱落的问题。使用过程中只是正常使用寿命的磨损失效,避免了眼镜板因合金块脱落、崩块等原因造成20%的早期失效问题；为解决眼镜板鼻梁处的耐磨性差的问题,在鼻梁处的涂层加入一定量的V元素,以提高涂层的耐磨性和抗冲击性能；耐磨涂层的成本只占眼镜板总价格的30%,大大降低了整件成本,整体的性价比高,给用户带来了更大的选择空间。(The invention discloses a spectacle plate and a preparation method thereof, wherein the spectacle plate is formed by integral high-temperature casting, a wear-resistant coating is added at a cutting surface and a material passing hole of the spectacle plate matched with a cutting ring, the wear-resistant coating and a matrix are integrally cast and formed, the combination is firm, and the problem of alloy or wear-resistant layer falling caused by processes such as brazing, bonding and the like is solved. Only wear failure in normal service life is caused in the use process, so that the problem of 20% early failure of the glasses plate caused by the falling of alloy blocks, block collapse and the like is solved; in order to solve the problem of poor wear resistance at the nose bridge of the glasses plate, a certain amount of V element is added into the coating at the nose bridge so as to improve the wear resistance and the shock resistance of the coating; the cost of the wear-resistant coating only accounts for 30% of the total price of the glasses plate, the cost of the whole piece is greatly reduced, the overall cost performance is high, and a larger selection space is brought to a user.)

1. A method for preparing a mirror plate, comprising the steps of:

adding a liquid adhesive into the wear-resistant particle powder, uniformly stirring, and coating the mixture in a groove of a spectacle plate matrix model to prepare a wear-resistant coating;

coating a casting coating on the outer surface of the wear-resistant coating of the glasses plate matrix model in a hanging manner;

casting molten metal smelted at high temperature is poured into a groove for hanging a glasses plate substrate model coated with casting coating to prepare a main body of the glasses plate;

cooling and forming to obtain a spectacle plate blank containing the wear-resistant coating;

and machining the glasses plate blank to obtain a finished glasses plate.

2. The method of manufacturing an eyeglass plate as set forth in claim 1, wherein the method of manufacturing the wear-resistant granulated powder comprises:

putting the wear-resistant powder into an oven for drying, preserving heat according to preset time, and cooling to room temperature;

and mixing the wear-resistant powder and the iron powder according to a ratio, and grinding to obtain uniformly mixed wear-resistant particle powder.

3. The method for manufacturing an eyeglass plate according to claim 2, wherein the wear-resistant powder comprises a plurality of Ti, TiC, graphite, WC and B, and has a particle size of 50-100 μm.

4. The method for preparing the wear plate according to claim 3, wherein the particle size of the iron powder is 30-60 μm, and the ratio of the wear-resistant powder to the iron powder is (5-10): 1.

5. The method for preparing an eyeglass plate according to any one of claims 2 through 4, wherein the wear-resistant coating of the eyeglass plate matrix model is further added with a V element.

6. The method of claim 1, wherein the wear-resistant coating applied to the recess of the basic model of the glasses plate has a height 2mm higher than the basic model of the glasses plate.

7. The method for preparing an eyeglass plate according to claim 1, wherein after the casting coating is hung on the eyeglass plate, the eyeglass plate substrate model is dried and then is placed in a sand box in order, and a pouring gate and a riser are reserved.

8. The method of manufacturing an eyeglass plate as set forth in claim 1, wherein the cast molten metal is molten carbon structural steel and/or alloy structural steel.

9. An eyeglass plate manufactured by the manufacturing method according to any one of claims 1 through 8, comprising a main body, and an abrasion resistant coating fixed to the inner side of the main body.

10. The eyeglass plate of claim 9 wherein the wear-resistant coating comprises a wear-resistant coating at the outer circle and a wear-resistant coating at the nose bridge, bonded by integral casting.

Technical Field

The invention relates to a spectacle plate and a preparation method thereof, belonging to the field of machining and manufacturing.

Background

The wear plate is a vulnerable part for concrete pump truck. In the pumping process, the glasses plate and the cutting ring alternately perform reciprocating relative cutting motion to realize material suction and feeding. Not only is it desirable to have good wear resistance, but it is also desirable to have certain impact and fatigue resistance properties.

At present, the mirror plate in the pumping industry mostly adopts a structure that hard alloy is embedded on a billet base body, and has structural forms of single alloy plus inner hole surfacing, double alloy plus inner hole surfacing, full alloy and the like, so that the cutting surface and the material passing surface are wear-resistant under the condition of ensuring the integral shock resistance, and the purpose of prolonging the service life of parts is achieved.

However, in the prior art, the combination mode of the hard alloy and the steel billet substrate adopts a brazing mode, but no matter the single alloy, the double alloy or the total alloy combines the steel substrate and the hard alloy through copper brazing adhesion, in the process of long-time use, the wear resistance of the gap part between the substrate and the copper brazing is poor, the hard alloy part is exposed after being worn, and the hard alloy part is easy to crack due to impact wear of concrete stones. The non-wear-resistant steel billet base body is directly contacted with concrete, slurry leakage in the conveying process is slightly caused, the wear-resistant cutting ring of the wear plate is seriously worn and fails in advance, the machine needs to be stopped for maintenance and part replacement, and the construction progress is influenced; on the other hand, in the alternate cutting process with the cutting ring, the wear failure of the wear plate for concrete pumping is the earliest that the nose bridge of the wear plate is impacted by abrasive and is worn by cutting, and the wear position is a weak position of the wear plate although alloy reinforcement is also adopted.

From the production and processing point of view, the production process of the glasses plate with the alloy mosaic structure is more, and the production process needs to pass through: blanking a steel billet, overlaying welding, opening an alloy groove, matching an alloy plate, brazing, polishing an alloy surface, drilling, inspecting and spraying paint.

In view of production cost, the purchase cost of the hard alloy is high, and generally accounts for 60% -80% of the price of the whole glasses plate, so that the cost of the whole glasses plate part is high.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a spectacle plate and a preparation method thereof, solves the problem that an alloy or a wear-resistant layer falls off due to processes such as brazing, bonding and the like in the prior art, simultaneously omits the processing procedures of billet blanking, surfacing, opening and closing a metal groove, alloy matching, brazing, alloy surface polishing and the like, and has the advantages of simple processing process, high production efficiency and low comprehensive cost.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme:

a method for preparing a mirror plate, comprising the steps of:

adding a liquid adhesive into the wear-resistant particle powder, uniformly stirring to prepare a wear-resistant coating, and coating the wear-resistant coating in the groove of the glasses plate matrix model;

smelting the cast metal liquid at high temperature, pouring the molten metal liquid into a spectacle plate matrix model, and performing integral high-temperature pouring molding;

and cooling after molding, and preparing a finished product glasses plate by adopting a machining treatment mode.

Further, the preparation method of the wear-resistant particle powder comprises the following steps:

putting the wear-resistant powder into an oven for drying, preserving heat according to preset time, and cooling to room temperature;

and mixing the wear-resistant powder and the iron powder according to a ratio, and grinding to obtain uniformly mixed wear-resistant particle powder.

Further, the particle size of the iron powder is 30-60 mu m, the wear-resistant powder comprises multiple of Ti, TiC, graphite, WC and B, the particle size is 50-100 mu m, and the proportion of the wear-resistant powder to the iron powder is (5-10): 1.

Furthermore, a V element is added in the wear-resistant coating of the glasses plate base model.

Furthermore, the wear-resistant coating smeared in the groove of the spectacle plate matrix model is 2mm higher than the spectacle plate matrix.

Further, after the casting coating is hung and coated, the glasses board substrate model is dried and then is placed in a sand box in order, and a pouring gate and a dead head are reserved.

Further, the casting molten metal is molten carbon structural steel and/or alloy structural steel.

The second purpose of the invention is to provide the glasses plate prepared by the preparation method, which comprises a main body and a wear-resistant coating fixed on the inner side of the main body.

Further, the wear-resistant coating ring comprises a wear-resistant coating at an outer circle and a wear-resistant coating at a nose bridge, and the wear-resistant coatings are combined through integral casting.

Compared with the prior art, the invention has the following beneficial effects:

(1) the wear-resistant coating is added on the cutting surface and the material passing hole of the glasses plate matched with the cutting ring, the wear-resistant coating and the main body of the glasses plate are combined into a whole by casting at high temperature, so that the wear-resistant performance of the working surface of the glasses plate is enhanced, the combination is firm, and the problem of alloy or wear-resistant layer falling caused by processes such as brazing, bonding and the like is solved; only wear failure in normal service life is caused in the use process, so that the problem of 20% early failure of the wear plate of the pump truck caused by falling off of alloy blocks, block collapse and the like is solved;

(2) the V element is added into the wear-resistant coating to improve the wear resistance and the impact resistance of the coating, and the wear-resistant coating containing the V element is coated on the nose bridge of the glasses plate, so that the problem of poor wear resistance at the nose bridge of the glasses plate can be solved;

(3) the formed glasses plate is integrally formed, but the working surface and the non-working surface are made of different materials, so that the wear resistance of the working surface is ensured, and the processability and the installation and fixation of the base body are ensured;

(4) the processing flows of blanking of steel billets, surfacing, opening and closing of gold grooves, alloy matching, brazing, shape correction, polishing of alloy surfaces and the like are omitted, the processing technology is simple, the production efficiency is high, the comprehensive cost is low, and the efficiency can be improved by 2 times compared with that of the conventional hard alloy embedding technology through calculation;

(5) the cost of the wear-resistant coating only accounts for 30% of the total price of the glasses plate, the cost of the whole piece is greatly reduced, the overall cost performance is high, and a larger selection space is brought to a user.

Drawings

FIG. 1 is a flow chart of a process for preparing an eyeglass plate according to example 1 of the present invention;

FIG. 2 is an overall structural view of the eyeglass plate of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2 of the present invention;

in the figure: 1. a main body; 2. a wear-resistant coating; 21. wear-resistant coating on the outer circle; 22. a wear-resistant coating at the bridge of the nose.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

The glasses plate was prepared using the flow chart shown in fig. 1:

and selecting wear-resistant powder of Ti, WC, V and graphite with the average particle size of 50 mu m. Putting the wear-resistant powder into an oven in advance at 180 ℃, preserving heat for 2 h, drying, and cooling to room temperature; and mixing the wear-resistant powder with 30 mu m iron powder according to a ratio of 10:1, putting the mixture into a ball mill, and ball-milling the mixture for 20 hours at a rotating speed of 100 r/min to obtain uniformly mixed wear-resistant particle powder X.

And preparing the wear-resistant powder Y without V according to the steps.

As shown in fig. 3, the two mixed powders are respectively added with a liquid binder and stirred uniformly into a paste, the paste containing the wear-resistant particle powder X is coated in the groove of the wear-resistant coating 22 at the nose bridge in the glasses plate matrix model, and the paste containing the wear-resistant particle powder Y is coated in the groove of the wear-resistant coating 21 at the outer circle in the glasses plate matrix model to prepare the wear-resistant coating, wherein the overall height of the wear-resistant coating is 2mm higher than that of the glasses plate matrix model and is used for machining allowance and wear resistance reinforcement. And hanging and coating a casting coating on the surface of the wear-resistant coating-coated glasses plate matrix model, drying, and then neatly placing in a sand box, and reserving a pouring gate and a dead head.

Selecting carbon structural steel as casting metal liquid, smelting by using an intermediate frequency furnace with the capacity of 1 ton, heating to 1520 ℃, completely melting the casting metal liquid, and casting and molding at the casting temperature of 1480 ℃ to obtain the glasses plate main body.

And (3) shakeout and cooling after molding, wherein the castings can not be stacked to influence the cooling speed during cooling, and if necessary, an air cooling device can be used for ensuring the cooling speed, so that a spectacle plate blank containing a wear-resistant coating can be obtained, and then the spectacle plate part shown in figure 2 can be obtained through machining treatment according to requirements.

The wear-resistant coating part of the wear-resistant plate part prepared by the method has the hardness of 65.3 HRC, the wear rate of 0.031%, the bending strength of 2116 MPa and the impact toughness of 7.45J/cm²。

Example 2

Selecting wear-resistant powder of TiC, WC, B, V and graphite with the average particle size of 48 mu m. Putting the wear-resistant powder into an oven in advance at 180 ℃, preserving heat for 2.5 h, drying, and cooling to room temperature. And then pressing the wear-resistant powder and the iron powder of 90 mu m by 8: 1, putting the mixture into a ball mill, and ball-milling the mixture for 24 hours at the rotating speed of 100 r/min to obtain uniformly mixed wear-resistant particle powder.

And preparing the wear-resistant powder Y without V according to the steps.

As shown in fig. 3, the two mixed powders are respectively added with liquid binder and stirred uniformly into paste, the paste containing the wear-resistant particle powder X is smeared in the groove of the wear-resistant coating 22 at the nose bridge in the glasses plate matrix model, and the paste containing the wear-resistant particle powder Y is smeared in the groove of the wear-resistant coating 21 at the excircle in the glasses plate matrix model, so as to obtain the wear-resistant coating, wherein the overall height of the wear-resistant coating is 2mm higher than that of the glasses plate matrix model. And hanging and coating a casting coating on the surface of the wear-resistant coating-coated glasses plate matrix model, drying, and then neatly placing in a sand box, and reserving a pouring gate and a dead head.

Smelting by using an intermediate frequency furnace with the capacity of 1 ton, wherein the casting molten metal can be alloy structural steel containing elements such as Cr, C, Mn, Si, Ni and the like, the content ratio of Cr to other elements is 40: 1-2: 1, the balance is Fe and inevitable impurities, heating to 1510 ℃, completely melting the molten metal, and performing casting molding at the casting temperature of 1470 ℃.

Shakeout cooling after molding: during cooling, the castings can not be stacked to influence the cooling speed, and an air cooling device can be used for ensuring the cooling speed when necessary; a spectacle plate blank containing a wear-resistant coating can be obtained and then machined as required to obtain the spectacle plate part shown in figure 2 of the invention.

The wear-resistant coating part of the wear-resistant plate part prepared by the method has the hardness of 65.4 HRC, the wear rate of 0.030 percent, the bending strength of 2226 MPa and the impact toughness of 8.62J/cm²。

Example 3

Selecting the WC, B, V and graphite wear-resistant powder with the average particle size of 60 mu m. Putting the wear-resistant powder into an oven in advance at 180 ℃, preserving heat for 2.5 h, drying, and cooling to room temperature. And then pressing the wear-resistant powder and 100 mu m iron powder by 5: 1, putting the mixture into a ball mill, and ball-milling the mixture for 24 hours at the rotating speed of 100 r/min to obtain uniformly mixed wear-resistant particle powder.

And preparing the wear-resistant powder Y without V according to the steps.

As shown in fig. 3, two kinds of mixed powders are added into a liquid binder and stirred uniformly into a paste, the paste containing the wear-resistant particle powder X is coated in the groove of the wear-resistant coating 22 at the nose bridge in the base model of the glasses plate, and the paste containing the wear-resistant particle powder Y is coated in the groove of the wear-resistant coating 21 at the periphery in the base model of the glasses plate, so as to obtain the wear-resistant coating, wherein the whole height of the wear-resistant coating is 2mm higher than that of the base of the glasses plate. And hanging and coating a casting coating on the surface of the wear-resistant coating-coated glasses plate model, drying, and then neatly placing in a sand box, and reserving a pouring gate and a dead head.

Smelting by using an intermediate frequency furnace with the capacity of 1 ton, wherein the casting metal liquid is selected from casting metal liquid and carbon structural steel. And heating to 1520 deg.c to melt the molten metal completely, and casting at 1480 deg.c.

And (3) shakeout cooling after molding, wherein the castings can not be stacked to influence the cooling speed during cooling, and an air cooling device can be used for ensuring the cooling speed when necessary. The wear-resistant coated eyeglass plate blank of the present invention can be obtained and then machined as required to obtain the eyeglass plate part of the present invention as shown in fig. 2.

The wear-resistant coating part of the wear-resistant plate part prepared by the method has the hardness of 66.1 HRC, the wear rate of 0.034%, the bending strength of 2309 MPa and the impact toughness of 7.62J/cm²。

Example 4

The invention provides a mirror plate, which can be prepared by the method of any one of embodiments 1 to 3, as shown in fig. 2 and 3, the mirror plate comprises a main body 1 and a wear-resistant coating 2, wherein the wear-resistant coating 2 is fixed on the inner side of the main body 1 and integrally molded by high-temperature integral casting molding; the wear-resistant coating 2 is divided into a wear-resistant coating 21 at an outer circle and a wear-resistant coating 22 at a nose bridge, and both the wear-resistant coating 21 and the wear-resistant coating 22 are made of wear-resistant particle powder and iron in a mixed mode.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.