CN109201192B - High life slay breaker - Google Patents
High life slay breaker Download PDFInfo
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- CN109201192B CN109201192B CN201811027061.1A CN201811027061A CN109201192B CN 109201192 B CN109201192 B CN 109201192B CN 201811027061 A CN201811027061 A CN 201811027061A CN 109201192 B CN109201192 B CN 109201192B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/001—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by extrusion or drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a long-service-life slag crushing device which comprises a machine shell, wherein an inverted trapezoid feeding hole and a strip-shaped discharging hole are formed in the machine shell, a rolling roller is transversely arranged in the feeding hole and in the discharging hole and comprises a roller body, spiral step-shaped crushing teeth are uniformly arranged on the surface of the roller body, an accommodating groove used for accommodating the tail end of each crushing tooth is formed in the periphery of the roller body, the tail end of each crushing tooth is inserted into the accommodating groove, and the tail end of each crushing tooth is fixedly connected with the roller body. According to the invention, the fixed connection mode between the crushing teeth and the roller body is optimized, the roller body and the crushing teeth are firmly combined, the crushing teeth and the roller body are not easy to deform and break during high-frequency crushing operation in the later period, and the service life of the rolling roller is long.
Description
Technical Field
The invention relates to a long-life slag crushing device, and belongs to the field of metallurgical industrial equipment.
Background
Metallurgy is the process and technology of extracting metals or metal compounds from minerals to produce metallic materials with certain properties by various processing methods. Metallurgy has a long history of development, from the stoneware age to the subsequent bronze age, to the large-scale development of modern steel smelting. The metallurgical technology mainly comprises pyrometallurgy, hydrometallurgy and electrometallurgy. Pyrometallurgical processes are those in which the ore, together with the necessary additives, is heated to high temperatures in a furnace and melted to a liquid to produce the desired chemical reactions, thereby separating the crude metal for refining. However, in the pyrometallurgical process, liquid metal is easily mixed with other substances at high temperature to form slag, and the slag has a large volume, so that the liquid metal needs to be crushed into small particles in the production process to be reused. The existing impact hammer type crushing equipment has poor crushing efficiency for metal slagging generated in metallurgy, so that the crushing equipment more suitable for slagging is designed, and is particularly important for recycling slagging in metallurgical industry, for example, the invention patent of application number 201710287997.7 applied in 2017 and 4 months of our company is 'slagging copper billet crusher for metal smelting', and slagging is respectively graded and crushed by an upper rolling roller and a lower rolling roller, so that the crushing efficiency is improved. However, this crusher finds, during use: the roller body of the upper rolling roller or the lower rolling roller and the crushing teeth are welded by full welding, the crushing teeth are usually made of impact-resistant and wear-resistant manganese steel, and the welding performance of the manganese steel is poor, so that the service life of the crushing teeth is limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a slag crushing device with long service life, which has the following specific technical scheme:
the utility model provides a high life slay breaker, includes the casing, the inside of casing is provided with inverts trapezoidal feed inlet and bar discharge gate, the feed inlet is located the top of discharge gate, the inside of feed inlet and the inside of discharge gate all transversely have the roller of rolling, it includes the shaft to roll, the surface of shaft evenly is provided with the broken tooth of spiral echelonment, the periphery of shaft is provided with the holding tank that is used for holding broken tooth tail end, broken tooth tail end inserts the inside of holding tank and the tail end and the shaft fixed connection of broken tooth.
As an improvement of the technical scheme, the roller body is made of nodular cast iron, and the crushing teeth are made of manganese steel.
As an improvement of the technical scheme, the method for fixedly connecting the tail end of the crushing tooth and the roller body comprises the following steps: burning red the holding tank in the roll body, burning red the tail end of broken tooth again, then insert the tail end of broken tooth into corresponding holding tank and extrusion, when treating broken tooth and roll body cooling to room temperature, adopt full weld welding at the juncture of broken tooth and roll body.
As an improvement of the technical scheme, the temperature of the accommodating groove in the roller body is 765-785 ℃ when the accommodating groove is burned, and the temperature of the tail end of the crushing tooth is 950-990 ℃ when the tail end of the crushing tooth is burned.
As the improvement of the technical scheme, the holding groove which is not burnt red is in clearance fit with the tail end of the crushing tooth which is not burnt red.
As an improvement of the technical scheme, the heat treatment and the nitriding treatment are sequentially carried out on the welded broken teeth.
As an improvement of the above technical solution, the heat treatment process comprises: cleaning the crushing teeth, putting the crushing teeth and the roller body into a vacuum furnace for quenching and tempering, wherein the quenching medium is vacuum quenching oil, the quenching temperature is 890-900 ℃, and the quenching heat preservation time is 100-110 minutes; the tempering temperature is 590-600 ℃, and the tempering heat preservation time is 130-140 minutes.
As an improvement of the technical scheme, the nitriding treatment process comprises the following steps: putting the heat-treated crushing teeth together with the roller body into a shot blasting machine for surface treatment, then cleaning the crushing teeth 22 by adopting an organic solvent, then putting the crushing teeth together with the roller body into a nitriding furnace for nitriding treatment at 530-550 ℃, and preserving heat for 5-6 hours at the temperature; and then reducing the temperature in the nitriding furnace to 380-400 ℃, and preserving the heat for 8-9 hours at the temperature.
As an improvement of the technical scheme, the organic solvent is one of gasoline, petroleum ether, acetone and ethanol.
The invention has the beneficial effects that: according to the long-life slag crushing device, the grinding roller is optimally designed in a fixed connection mode between the crushing teeth and the roller body, the roller body and the crushing teeth are firmly combined, the crushing teeth and the roller body are not easy to deform and break during high-frequency crushing operation in the later period, and the grinding roller is long in service life.
Drawings
Fig. 1 is a schematic structural view of a long-life slag crushing apparatus according to the present invention;
FIG. 2 is a schematic view of the construction of the laminating roller according to the present invention;
fig. 3 is a schematic view of the receiving groove of the present invention before being fixed to the crushing teeth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-3, high life slay breaker, including casing 10, the inside of casing 10 is provided with inverts trapezoidal feed inlet and bar discharge gate, the feed inlet is located the top of discharge gate, the inside of feed inlet and the inside of discharge gate all transversely have the roller 20 of rolling, the roller 20 includes shaft 21, the surface of shaft 21 evenly is provided with the broken tooth 22 of spiral echelonment, its characterized in that: the periphery of roller body 21 is provided with the holding tank 211 that is used for holding broken tooth 22 tail end, broken tooth 22 tail end inserts the inside of holding tank 211 and broken tooth 22's tail end and roller body 21 fixed connection. The roller body 21 is made of nodular cast iron, and the crushing teeth 22 are made of manganese steel. The holding groove 211 which is not burnt red is in clearance fit with the tail end of the crushing tooth 22 which is not burnt red.
Example 1
The method for fixedly connecting the tail ends of the crushing teeth 22 and the roller body 21 is as follows:
1) burning red at the accommodating groove 211 of the roller body 21, and burning red at the tail end of the crushing tooth 22, wherein the temperature of the accommodating groove 211 of the roller body 21 when being burned red is 765-775 ℃, and the temperature of the tail end of the crushing tooth 22 when being burned red is 950-960 ℃.
2) And then the tail ends of the crushing teeth 22 are inserted into the corresponding accommodating grooves 211 and are extruded, and when the crushing teeth 22 and the roller body 21 are cooled to room temperature, full-length welding is adopted at the boundary of the crushing teeth 22 and the roller body 21.
3) And sequentially carrying out heat treatment and nitriding treatment on the welded crushing teeth 22, wherein the heat treatment process comprises the following steps: cleaning the crushing teeth 22, putting the crushing teeth 22 and the roller body 21 into a vacuum furnace for quenching and tempering, wherein the quenching medium is vacuum quenching oil, the quenching temperature is 890-900 ℃, and the quenching and heat preservation time is 100 minutes; the tempering temperature is 590-600 ℃, and the tempering heat preservation time is 130 minutes.
4) The nitriding treatment process comprises the following steps: putting the heat-treated crushing teeth 22 together with the roller body 21 into a shot blasting machine for surface treatment, then cleaning the crushing teeth 22 by adopting an organic solvent, then putting the crushing teeth 22 together with the roller body 21 into a nitriding furnace for nitriding treatment at the nitriding temperature of 530-541 ℃, and preserving heat at the temperature for 5 hours; and reducing the temperature in the nitriding furnace to 380-390 ℃, and preserving the heat for 8 hours at the temperature.
Example 2
The method for fixedly connecting the tail ends of the crushing teeth 22 and the roller body 21 is as follows:
1) the accommodating groove 211 of the roller body 21 is burnt red, and the tail end of the crushing tooth 22 is burnt red, wherein the temperature of the accommodating groove 211 of the roller body 21 is 775-785 ℃ when the accommodating groove is burnt red, and the temperature of the tail end of the crushing tooth 22 is 965-980 ℃ when the accommodating groove is burnt red.
2) And then the tail ends of the crushing teeth 22 are inserted into the corresponding accommodating grooves 211 and are extruded, and when the crushing teeth 22 and the roller body 21 are cooled to room temperature, full-length welding is adopted at the boundary of the crushing teeth 22 and the roller body 21.
3) And sequentially carrying out heat treatment and nitriding treatment on the welded crushing teeth 22, wherein the heat treatment process comprises the following steps: cleaning the crushing teeth 22, putting the crushing teeth 22 and the roller body 21 into a vacuum furnace for quenching and tempering, wherein the quenching medium is vacuum quenching oil, the quenching temperature is 890-900 ℃, and the quenching and heat preservation time is 105 minutes; the tempering temperature is 590-600 ℃, and the tempering heat preservation time is 135 minutes.
4) The nitriding treatment process comprises the following steps: putting the heat-treated crushing teeth 22 together with the roller body 21 into a shot blasting machine for surface treatment, then cleaning the crushing teeth 22 by adopting an organic solvent, then putting the crushing teeth 22 together with the roller body 21 into a nitriding furnace for nitriding treatment at the nitriding temperature of 543-550 ℃, and preserving heat for 6 hours at the temperature; and reducing the temperature in the nitriding furnace to 390-400 ℃, and preserving the heat for 9 hours at the temperature.
Example 3
The method for fixedly connecting the tail ends of the crushing teeth 22 and the roller body 21 is as follows:
1) the temperature of the accommodating groove 211 of the roller body 21 is 775-785 ℃ when the accommodating groove 211 of the roller body 21 is burnt red, and the temperature of the tail end of the crushing tooth 22 is 980-990 ℃ when the tail end of the crushing tooth 22 is burnt red.
2) And then the tail ends of the crushing teeth 22 are inserted into the corresponding accommodating grooves 211 and are extruded, and when the crushing teeth 22 and the roller body 21 are cooled to room temperature, full-length welding is adopted at the boundary of the crushing teeth 22 and the roller body 21.
3) And sequentially carrying out heat treatment and nitriding treatment on the welded crushing teeth 22, wherein the heat treatment process comprises the following steps: cleaning the crushing teeth 22, putting the crushing teeth 22 and the roller body 21 into a vacuum furnace for quenching and tempering, wherein the quenching medium is vacuum quenching oil, the quenching temperature is 890-900 ℃, and the quenching and heat preservation time is 110 minutes; the tempering temperature is 590-600 ℃, and the tempering heat preservation time is 140 minutes.
4) The nitriding treatment process comprises the following steps: putting the heat-treated crushing teeth 22 together with the roller body 21 into a shot blasting machine for surface treatment, then cleaning the crushing teeth 22 by adopting an organic solvent, then putting the crushing teeth 22 together with the roller body 21 into a nitriding furnace for nitriding treatment at the nitriding temperature of 543-550 ℃, and preserving heat for 6 hours at the temperature; and reducing the temperature in the nitriding furnace to 390-400 ℃, and preserving the heat for 9 hours at the temperature.
In the above embodiment, the organic solvent is one of gasoline, petroleum ether, acetone, and ethanol.
The grinding roll 20 obtained by the method of example 1, example 2 or example 3 has excellent binding force between the roll body 21 and the crushing teeth 22, and the crushing teeth 22 are not easily worn. The slag crushing device provided by the invention can perform crushing operation for 8-10 hours every day, and after the grinding roller 20 is used for 1 year and 3 months, the crushing teeth 22 and the roller body 21 are well combined and do not deform or break.
The invention patent with the application number of 201710287997.7, namely 'a slagging copper block crusher for metal smelting', previously applied by the company of China, is characterized in that a roller body in an upper rolling roller is made of nodular cast iron, crushing teeth of the upper rolling roller are made of manganese steel, full-welding is adopted between the crushing teeth of the upper rolling roller and the roller body in the upper rolling roller, so that the slagging copper block crusher for metal smelting carries out crushing operation for 8-10 hours every day, after the upper rolling roller is used for 6 months, severe deformation and breakage are generated between the crushing teeth of the upper rolling roller and the roller body in the upper rolling roller, the number of the broken crushing teeth of the upper rolling roller exceeds 50%, and the upper rolling roller needs to be replaced after being used for 6 months.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a high life slay breaker, includes the casing, the inside of casing is provided with inverts trapezoidal feed inlet and bar discharge gate, the feed inlet is located the top of discharge gate, the inside of feed inlet and the inside of discharge gate all transversely have the roller of rolling, the roller of rolling includes the shaft, the surface of shaft evenly is provided with the broken tooth of spiral echelonment, its characterized in that: the periphery of the roller body is provided with an accommodating groove for accommodating the tail end of the crushing tooth, the tail end of the crushing tooth is inserted into the accommodating groove, and the tail end of the crushing tooth is fixedly connected with the roller body;
the roller body is made of nodular cast iron, and the crushing teeth are made of manganese steel;
the method for fixedly connecting the tail end of the crushing tooth and the roller body comprises the following steps: burning red the holding tank in the roll body, burning red the tail end of broken tooth again, then insert the tail end of broken tooth into corresponding holding tank and extrusion, when treating broken tooth and roll body cooling to room temperature, adopt full weld welding at the juncture of broken tooth and roll body.
2. A long-life slag crushing apparatus according to claim 1, characterized in that: the temperature of the accommodating groove in the roller body is 765-785 ℃ when the accommodating groove is burned, and the temperature of the tail end of the crushing tooth is 950-990 ℃ when the tail end of the crushing tooth is burned.
3. A long-life slag crushing apparatus according to claim 1, characterized in that: the holding groove which is not burnt red is in clearance fit with the tail end of the crushing tooth which is not burnt red.
4. A long-life slag crushing apparatus according to claim 1, characterized in that: and carrying out heat treatment and nitriding treatment on the welded broken teeth in sequence.
5. A long-life slag crushing apparatus according to claim 4, characterized in that: the heat treatment process comprises the following steps: cleaning the crushing teeth, putting the crushing teeth and the roller body into a vacuum furnace for quenching and tempering, wherein the quenching medium is vacuum quenching oil, the quenching temperature is 890-900 ℃, and the quenching heat preservation time is 100-110 minutes; the tempering temperature is 590-600 ℃, and the tempering heat preservation time is 130-140 minutes.
6. A long-life slag crushing apparatus according to claim 4, characterized in that: the nitriding treatment process comprises the following steps: putting the heat-treated crushing teeth together with the roller body into a shot blasting machine for surface treatment, then cleaning the crushing teeth (22) by adopting an organic solvent, then putting the crushing teeth together with the roller body into a nitriding furnace for nitriding treatment, wherein the nitriding temperature is 530-550 ℃, and preserving heat for 5-6 hours at the temperature; and then reducing the temperature in the nitriding furnace to 380-400 ℃, and preserving the heat for 8-9 hours at the temperature.
7. A long-life slag crushing apparatus according to claim 6, characterized in that: the organic solvent is one of gasoline, petroleum ether, acetone and ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811027061.1A CN109201192B (en) | 2018-09-04 | 2018-09-04 | High life slay breaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811027061.1A CN109201192B (en) | 2018-09-04 | 2018-09-04 | High life slay breaker |
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| CN109201192A CN109201192A (en) | 2019-01-15 |
| CN109201192B true CN109201192B (en) | 2021-07-20 |
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| CN201811027061.1A Active CN109201192B (en) | 2018-09-04 | 2018-09-04 | High life slay breaker |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699479A1 (en) * | 1994-09-05 | 1996-03-06 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material |
| CN2834695Y (en) * | 2005-10-18 | 2006-11-08 | 贾利新 | Single-roller crusher with roller tooth connected with shaft dovetail groove |
| CN102312057A (en) * | 2011-07-01 | 2012-01-11 | 山西太钢不锈钢股份有限公司 | Heat treating method for driving roll and driving gear of rolling mill |
| CN104087867A (en) * | 2014-07-31 | 2014-10-08 | 宁国市宁武耐磨材料有限公司 | High wearing resistance anti-oxidation wear-resisting ball for ball mill |
| CN205361479U (en) * | 2016-01-26 | 2016-07-06 | 广西益隆盛科技有限公司 | Heliciform crushing roller of many broken heads |
| CN206853796U (en) * | 2017-04-27 | 2018-01-09 | 铜陵有色兴铜机电制造有限公司 | A kind of slagging copper billet disintegrating machine for metal smelt |
-
2018
- 2018-09-04 CN CN201811027061.1A patent/CN109201192B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0699479A1 (en) * | 1994-09-05 | 1996-03-06 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material |
| CN2834695Y (en) * | 2005-10-18 | 2006-11-08 | 贾利新 | Single-roller crusher with roller tooth connected with shaft dovetail groove |
| CN102312057A (en) * | 2011-07-01 | 2012-01-11 | 山西太钢不锈钢股份有限公司 | Heat treating method for driving roll and driving gear of rolling mill |
| CN104087867A (en) * | 2014-07-31 | 2014-10-08 | 宁国市宁武耐磨材料有限公司 | High wearing resistance anti-oxidation wear-resisting ball for ball mill |
| CN205361479U (en) * | 2016-01-26 | 2016-07-06 | 广西益隆盛科技有限公司 | Heliciform crushing roller of many broken heads |
| CN206853796U (en) * | 2017-04-27 | 2018-01-09 | 铜陵有色兴铜机电制造有限公司 | A kind of slagging copper billet disintegrating machine for metal smelt |
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| Publication number | Publication date |
|---|---|
| CN109201192A (en) | 2019-01-15 |
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