CN214439662U

CN214439662U - Wear-resistant layer with visible mark for ball mill lining

Info

Publication number: CN214439662U
Application number: CN202022917866.2U
Authority: CN
Inventors: 董宁; 史旭晨; 张均
Original assignee: Shenzhen Weige New Material Technology Co ltd
Current assignee: Shenzhen Weige New Material Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-22
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a wear-resistant layer with a visual mark for a lining of a ball mill, which belongs to the field of wear-resistant coatings and comprises a base material, and an adhesive layer, an isolating layer, a mark layer and a wear-resistant layer which are sequentially arranged on the surface of the base material; wherein the base material is high manganese steel, and the wear-resistant layer is a polyurethane coating; the polyurethane coating covers the identification layer; compared with the prior art, the polyurethane coating can effectively prevent the lining of the ball mill from being worn and consumed; set up visual identification layer simultaneously under the wearing layer, after the wearing layer is exhausted by wearing and tearing, the identification layer just can be observed by the vision, plays the effect of reminding the plant maintenance, prevents that the ball mill from being worn and torn.

Description

Wear-resistant layer with visible mark for ball mill lining

Technical Field

The utility model relates to a field wear-resistant coating field specifically is a be used for visual sign wearing layer in ball mill lining area.

Background

The ball mill is suitable for grinding various ores and other materials and is widely used in the industries of mineral separation, building materials, chemical industry and the like; in order to improve the wear resistance of the ball mill and prevent the ball mill from being directly worn, a rubber lining is generally arranged at the use end of the ball mill; the existing rubber lining is characterized in that a rubber layer is directly adhered to the surface layer of the inner lining of the ball mill through an adhesive to play a role in wear resistance; however, the wear-resistant layer is gradually worn away with the lapse of service time, and the existing wear-resistant layer cannot realize visual identification of the wear degree; the condition that the surface of the lining of the ball mill is worn easily occurs; therefore, how to rapidly and accurately judge the wear degree of the wear-resistant layer is an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists among the above-mentioned technique, the utility model provides a be used for visual sign wearing layer in ball mill lining area is equipped with visual sign in the wearing layer, when the wearing layer is about to wear and tear and exhausts, exposes visual sign, reminds to change the wearing layer.

In order to achieve the purpose, the utility model provides a wear-resistant layer used for a lining belt of a ball mill, which comprises a base material, and an adhesive layer, an isolation layer, a marking layer and a wear-resistant layer which are arranged on the surface of the base material in sequence; wherein the base material is high manganese steel, and the wear-resistant layer is a polyurethane coating; and the polyurethane coating covers the identification layer.

In a specific scheme, the marking layer is a polyurethane coating with fluorescent powder; the mark layer is exposed after the thickness of the wear-resistant layer is completely worn.

In a specific scheme, the thickness of the marking layer is 50-100 microns.

Specifically, the bonding layer comprises a sand blasting layer covering the surface of the base material and an NR9600 polymer base coating used for bonding the isolation layer and the sand blasting layer.

In a specific scheme, the thickness of the sand blasting layer is 50-100 microns.

In a particular embodiment, the NR9600 polymeric primer layer has a thickness of from 50 microns to 100 microns.

In a specific scheme, the isolation layer comprises a hard isolation layer arranged on the bonding layer and a soft isolation layer arranged on the hard isolation layer; the soft isolation layer is used for bonding the hard isolation layer and the wear-resistant layer.

In a specific scheme, the hard isolation layer and the soft isolation layer are both NR9500 polymers; wherein the hard isolation layer is obtained by airing NR9500 polymer for 1-12 hours; the soft isolation layer is obtained by airing NR9500 polymer for 1-30 minutes.

In a specific scheme, the thickness of the hard isolation layer is 80-100 microns; the thickness of the soft isolation layer is 20-50 microns.

In a specific scheme, the thickness of the wear-resistant layer is 1-2 mm.

According to the specific scheme, the polyurethane coating comprises a component A and a component B: the component A comprises: MDI or TDI, B component: PTMEG; and the weight ratio of the component A to the component B is 100: 92.63; the volume ratio is 100: 100.

in another preferred scheme, molybdenum disulfide, polytetrafluoroethylene powder, graphite and other auxiliary materials are further added into the wear-resistant layer, so that the wear-resistant strength of the wear-resistant layer is further enhanced.

The utility model has the advantages that: the wear-resistant layer with the visual mark for the lining of the ball mill comprises a base material, and an adhesive layer, an isolation layer, a mark layer and a wear-resistant layer which are sequentially arranged on the surface of the base material; wherein the base material is high manganese steel, and the wear-resistant layer is a polyurethane coating; the polyurethane coating covers the identification layer; compared with the prior art, the polyurethane coating can effectively prevent the lining of the ball mill from being worn and consumed; set up visual identification layer simultaneously under the wearing layer, after the wearing layer is exhausted by wearing and tearing, the identification layer just can be observed by the vision, plays the effect of reminding the plant maintenance, prevents that the ball mill from being worn and torn.

Drawings

FIG. 1 is a view showing the overall structure of the material layer of the present invention;

fig. 2 is a structural relationship diagram of the material layer of the present invention.

The main element symbols are as follows:

1. a substrate; 2. an adhesive layer; 3. an isolation layer; 4. a wear layer; 5. an identification layer; 21. Spraying a sand layer; 22. a NR9600 polymer base coat; 31. a hard barrier layer; 32. a soft isolation layer.

Detailed Description

In order to make the present invention clearer, the present invention will be further described with reference to the accompanying drawings.

As described in the background, the existing rubber lining in the ball mill is still worn after a long time use; how to accurately and timely maintain and replace the rubber lining with the wear-resisting function to prevent the working end face of the ball mill from being worn is an urgent need to solve the problem; based on the above, the utility model provides a wear-resistant layer with visual identification for a lining of a ball mill, which is shown in figure 1 and comprises a substrate 1, and an adhesive layer 2, an isolation layer 3, an identification layer 5 and a wear-resistant layer 4 which are sequentially arranged on the surface of the substrate 1; wherein the base material 1 is high manganese steel, and the wear-resistant layer 4 is a polyurethane coating; and the polyurethane coating obscures the indicia layer 5.

Compared with the prior art, the polyurethane coating can effectively prevent the lining of the ball mill from being worn and consumed; set up visual identification layer 5 simultaneously under wearing layer 4, after wearing layer 4 is exhausted by wearing and tearing, identification layer 5 could be observed by the vision, plays the effect of reminding the plant maintenance, prevents that the ball mill from being worn and torn.

In this embodiment, the marking layer 5 is a polyurethane coating with fluorescent powder; the thickness of the wear-resistant layer 4 is completely worn, and the mark layer 5 is exposed; the fluorescent powder is mixed in the polyurethane coating to change the color of the polyurethane coating, is different from the wear-resistant layer 4 in visual effect, and does not influence the wear-resistant performance of the polyurethane coating after being added; the polyurethane coating with the fluorescent powder is easy to directly identify in a scene with dark light, and the fluorescent powder can be replaced by other materials which are visually identified under the optical or electric effect.

In this embodiment, the marking layer 5 has a thickness of 50-100 microns; the thickness of the marking layer 5 is larger than 50 microns, a certain wear-resisting effect can be achieved, and the base material 1 is prevented from being damaged immediately after the wear-resisting layer 4 is used up.

In this example, the substrate surface had a finish that satisfied, Ra <1.6 microns; the thickness of the sand blasting layer 21 is 50-100 microns; the NR9600 polymeric basecoat 22 has a thickness of 120 microns to 150 microns; the NR9600 polymer primer is a viscous agent with weak fluidity, is suitable for being used as an adhesive on a smooth metal surface, is self-leveled on the surface of a base material after being sprayed on the surface of the base material, and can ensure that the smoothness of the surface of the base material after being sprayed is not influenced; where the NR9600 polymer primer layer 22 is slightly thicker to help ensure a self-leveling surface finish.

In this example, the NR9600 polymer base coat is a two-component resin-based polymer base coat which is used to improve the adhesion of the NR9500 polymer to the metal substrate 1 and also to provide cathodic protection in corrosive environments.

The NR9600 polymeric basecoat comprises two components:

the first component comprises: methyl ethyl ketone: 40% -70%, isopropanol: 10% -30%, tri-zinc di-orthophosphate: 10% -30%, phenol: 1% -5%, methanol: 1% -5%;

the second clock component comprises: ethyl acetate: 0% -70%, isopropanol: 10% -30%, phosphoric acid: 1 to 5 percent.

Preferably, the isolation layer 3 comprises a hard isolation layer 31 arranged on the bonding layer 2 and a soft isolation layer 32 arranged on the hard isolation layer 31; the soft isolation layer 32 is used for bonding the hard isolation layer 31 and the wear-resistant layer 4; the hard separator 31 and the soft separator 32 are both NR9500 polymers; wherein the hard isolation layer 31 is obtained by airing NR9500 polymer for 1-12 hours; the soft separating layer 32 is obtained by airing the NR9500 polymer for 1 to 30 minutes.

In the present embodiment, the isolation layer 3 functions to isolate the adhesive layer 2 from the polyurethane coating, the hard isolation layer 31 mainly functions to isolate the NR9600 polymer base coat layer 22 from the polyurethane coating, and the soft isolation layer 32 functions to increase the adhesive strength between the hard isolation layer 31 and the polyurethane coating. The reason for providing the soft insulation layer 32 is that if the hard insulation layer 31 is completely cured after being dried for 1 to 12 hours as described in the example, the adhesive effect thereof is greatly reduced if the polyurethane coating is directly sprayed. Therefore, the soft isolation layer 32 is arranged to increase the bonding strength between the hard isolation layer 31 and the polyurethane coating; if the hard isolation layer is directly sprayed with the polyurethane coating after being not dried, the polyurethane coating can permeate into the bonding layer 2, and the bonding strength can be damaged if the polyurethane coating is compatible with the bonding layer.

In the processing process, if the air drying time of the hard isolation layer 31 exceeds 12 hours, the surface of the hard isolation layer 31 can be lightly brushed by butanone to restore the effect, then the soft isolation layer 32 is brushed, and the spraying construction of the polyurethane coating is completed within 30 minutes.

The NR9500 polymer is a bicomponent resin-based polymer primer coat and is used for improving the adhesive force of the isolating layer 3 and the metal substrate 1, and the NR9500 polymer must be fully mixed before use, and the weight ratio is 3: 1; after mixing, the mixture may be left for 5 minutes.

In this example, the NR9500 polymer comprises two components; the first component comprises a bisphenol a diglycidyl ether polymer: 15% -40%, methyl ethyl ketone: 50% -60%; the second component comprises: 4, 4' -diphenylmethane diisocyanate: 10% -20%; methyl ethyl ketone: 70 to 80 percent.

In a specific scheme, in order to ensure the isolation effect, the thickness of the hard isolation layer 31 is preferably 80-100 micrometers; meanwhile, the thickness of the soft isolation layer 32 should not be too large to ensure the bonding effect, and the thickness of the soft isolation layer 32 is 20-50 microns.

In the present embodiment, the wear-resistant layer 4 has a thickness of 1-2 mm; mainly plays a role in corrosion resistance and wear resistance.

In a specific scheme, the polyurethane coating comprises a component A and a component B: the polyurethane coating comprises a component A and a component B: the component A comprises: MDI or TDI; and B component: polytetrahydrofuran. The polyurethane coating had an amount of wear of 0.062g in a wear test of 1000 revolutions with a 1Kg type H18 grinding wheel.

The utility model has the advantages that:

1. the polyurethane coating can effectively prevent the lining of the ball mill from being worn and consumed; set up visual identification layer simultaneously under the wearing layer, after the wearing layer is exhausted by wearing and tearing, the identification layer just can be observed by the vision, plays the effect of reminding the plant maintenance, prevents that the ball mill from being worn and torn.

2. The bonding layer comprises a sand blasting layer covering the surface of the base material and an NR9600 polymer bottom coating used for bonding the isolation layer and the sand blasting layer; the sandblast layer is used to increase the roughness of the substrate surface and to improve the adhesion between the substrate and the NR9600 polymer base coat.

3. The isolation layer comprises a hard isolation layer arranged on the bonding layer and a soft isolation layer arranged on the hard isolation layer; the hard insulating layer mainly plays a role of insulating the NR9600 polymer base coat and the polyurethane coating, and the soft insulating layer is used for increasing the bonding strength between the hard insulating layer and the polyurethane coating.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A wear-resistant layer with a visual mark for a lining of a ball mill is characterized by comprising a base material, and an adhesive layer, an isolating layer, a mark layer and a wear-resistant layer which are sequentially arranged on the surface of the base material; wherein the base material is high manganese steel, and the wear-resistant layer is a polyurethane coating; and is

The polyurethane coating shields the identification layer.

2. The visual identification wear-resistant layer for the ball mill lining as claimed in claim 1, wherein the identification layer is a polyurethane coating with fluorescent powder; the mark layer is exposed after the thickness of the wear-resistant layer is completely worn.

3. The visual identification wear layer for ball mill liners according to claim 1, wherein the identification layer has a thickness of 50 to 100 μm.

4. The abrasion-resistant layer with the visual mark for the ball mill lining as claimed in claim 1, wherein the bonding layer comprises a sandblasting layer covering the surface of the base material and an NR9600 polymer base coat for bonding the isolation layer and the sandblasting layer.

5. The visual identification wear layer for ball mill liners according to claim 4, wherein the grit blasting layer has a thickness of 50-100 microns.

6. The visual identification wear-resistant layer for the ball mill lining as claimed in claim 4, wherein the NR9600 polymer primary coating has a thickness of 50-100 μm.

7. The visual identification wear layer for the ball mill liner according to claim 1, wherein the isolation layer comprises a hard isolation layer disposed on the bonding layer and a soft isolation layer disposed on the hard isolation layer; the soft isolation layer is used for bonding the hard isolation layer and the wear-resistant layer.

8. The visual identification wear layer for ball mill liners according to claim 1, wherein the hard spacer layer has a thickness of 80-100 μm; the thickness of the soft isolation layer is 20-50 microns.

9. The visual identification wear layer for the ball mill lining as claimed in claim 1, wherein the thickness of the wear layer is 1-2 mm.