CN112659001A - Manufacturing method of heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billet - Google Patents
Manufacturing method of heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billet Download PDFInfo
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- CN112659001A CN112659001A CN202011476286.2A CN202011476286A CN112659001A CN 112659001 A CN112659001 A CN 112659001A CN 202011476286 A CN202011476286 A CN 202011476286A CN 112659001 A CN112659001 A CN 112659001A
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Abstract
The invention relates to the technical field of heavy-load grinding wheels, in particular to a manufacturing method of a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets, which comprises the following steps: step 1: manufacturing an abrasive, and crushing the screened high-grade pyrite after purification treatment to obtain the abrasive; step 2: mixing materials to obtain a mixed abrasive material, wherein the mixing materials comprise: liquid resin, resin powder and high-sulfur iron ore powder; and step 3: the mixed abrasive is pressed into a mould and then is fired in a kiln; and 4, step 4: opening the kiln, naturally cooling to normal temperature, and taking out of the kiln to obtain a finished heavy-load grinding wheel; and 5: and (5) after the grinding wheel is taken out of the kiln, checking the appearance of the heavy-load grinding wheel, and performing a rotation strength test. The manufacturing method of the heavy-load grinding wheel provided by the invention has the advantages that the high-pyrite in the heavy-load grinding wheel is in chemical reaction with oxygen when contacting with the surface of a steel billet to absorb heat, the service life is prolonged, the cost is low, and the compatibility is good.
Description
Technical Field
The invention relates to the technical field of heavy-load grinding wheels, in particular to a manufacturing method of a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets.
Background
China is the first major steel manufacturing base in the world, and a heavy-load grinding wheel is equipment applied to surface treatment of continuous casting and rolling high-temperature billets, so that the production efficiency of steel can be greatly improved, and at present, the existing heavy-load grinding wheel mainly has three sizes: the diameters of 610mm, 760mm and 915mm are all resin bonded to ensure the strength of the grinding wheel. Most of the resins begin to carbonize when the temperature exceeds 450 ℃, almost all of the resins carbonize when the temperature exceeds 800 ℃, thereby losing the bonding property, and potassium fluoroaluminate or sodium fluoroaluminate is added into the product to protect the resins, the two substances are melted when the temperature exceeds 500 ℃ and 600 ℃, the heat is absorbed, the temperature of the grinding wheel is reduced, but if the surface temperature of the steel billet exceeds 600 ℃, the heat dissipation effect exerted by the two substances is gradually lost, and meanwhile, the raw materials such as the potassium fluoroaluminate or the sodium fluoroaluminate and the like increase the production cost of the product.
Therefore, the prior heavy-load grinding wheel has low heat resistance, resin carbonization is caused when a high-temperature billet is ground, the service life of the grinding wheel is greatly reduced, and the billet is re-processed after being cooled, so that the billet production speed is influenced, and the production cost is increased. In view of the above, we propose a method for manufacturing a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets.
Disclosure of Invention
The invention aims to provide a method for manufacturing a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing method of a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets comprises the following steps:
step 1: manufacturing an abrasive, screening high-grade pyrite, purifying, and crushing to obtain the abrasive, wherein the content of sulfur in the abrasive is not less than 54%, the content of iron in the abrasive is not less than 44%, the content of water in the abrasive is not more than 0.5%, the content of silicon dioxide in the abrasive is not more than 1.5%, and the real density of the abrasive is not less than 4.85g/cm3The pH value is as follows: 5.0-7.0;
step 2: mixing materials to obtain the mixed abrasive, which comprises the following steps in sequence:
step 21: adding liquid resin mixed abrasive to ensure that the surface of each abrasive particle is fully soaked in the liquid resin;
step 22: adding resin powder, and fully mixing to ensure that the resin powder fully wraps the surface of the grinding material;
step 23: adding high-sulfur iron ore powder, and uniformly mixing;
and step 3: the mixed abrasive is pressed into a mould and then is fired in a kiln;
and 4, step 4: opening the kiln, naturally cooling to normal temperature, and taking out of the kiln to obtain a finished heavy-load grinding wheel;
and 5: and (5) after the grinding wheel is taken out of the kiln, checking the appearance of the heavy-load grinding wheel, and performing a rotation strength test.
Preferably, in step 3, during the firing process of the kiln:
firing for 9 hours when the temperature in the kiln is increased from 25 ℃ to 100 ℃;
when the temperature in the kiln is raised to 100 ℃, keeping 100 ℃ for firing for 2 hours;
heating the temperature in the kiln from 100 ℃ to 110 ℃ and firing for 3 hours;
heating the temperature in the kiln from 110 ℃ to 145 ℃ and firing for 7 hours;
the temperature in the kiln is raised from 145 ℃ to 150 ℃, and the mixture is fired for 1 hour
The temperature in the kiln is raised from 145 ℃ to 160 ℃, and the mixture is fired for 1 hour
When the temperature in the kiln rises to 160 ℃, the temperature is kept for 8 to 12 hours.
Compared with the prior art, the invention has the beneficial effects that: the manufacturing method of the heavy-load grinding wheel for the surface treatment of the continuous casting and rolling high-temperature billet steel utilizes the chemical reaction between high-pyrite in the heavy-load grinding wheel and oxygen when the high-pyrite is in contact with the surface of the billet steel to generate ferric oxide, and the ferric oxide absorbs heat generated in the billet steel and grinding, so that resin on the surface of the grinding wheel is protected from being carbonized at high temperature, the strength and the grinding performance of the heavy-load grinding wheel are maintained, meanwhile, the pyrite is a natural mineral product with low price and huge reserves, and compared with the zirconium corundum grinding material and the resin binder in the heavy-load grinding wheel, the manufacturing method has the characteristics of low cost, easiness in processing, good compatibility and the like, not only reduces the production cost of the heavy-load grinding wheel, but also more importantly avoids repeated heating of the billet steel, and.
Drawings
FIG. 1 is a flow chart of a method of making a heavy duty grinding wheel according to the present invention;
FIG. 2 is a flow chart of a method of making the hybrid abrasive of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a technical solution provided by the present invention is:
a manufacturing method of a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets comprises the following steps:
step 1: manufacturing an abrasive, screening high-grade pyrite, purifying, and crushing to obtain the abrasive, wherein the content of sulfur in the abrasive is not less than 54%, the content of iron in the abrasive is not less than 44%, the content of water in the abrasive is not more than 0.5%, the content of silicon dioxide in the abrasive is not more than 1.5%, and the real density of the abrasive is not less than 4.85g/cm3The pH value is as follows: 5.0-7.0;
step 2: mixing materials to obtain the mixed abrasive, which comprises the following steps in sequence:
step 21: adding liquid resin mixed abrasive to ensure that the surface of each abrasive particle is fully soaked in the liquid resin;
step 22: adding resin powder, and fully mixing to ensure that the resin powder fully wraps the surface of the grinding material;
step 23: adding high-sulfur iron ore powder, and uniformly mixing;
and step 3: the mixed abrasive is pressed into a mould and then is fired in a kiln;
and 4, step 4: opening the kiln, naturally cooling to normal temperature, and taking out of the kiln to obtain a finished heavy-load grinding wheel;
and 5: and (5) after the grinding wheel is taken out of the kiln, checking the appearance of the heavy-load grinding wheel, and performing a rotation strength test.
Specifically, in the step 23, the high-pyrite powder accounts for 10-15% of the mass ratio, and is fully mixed with the resin powder and the grinding material, so that the grinding material, the resin and the high-pyrite are uniformly mixed, and the principle of the operation is that the high-pyrite in the heavy-load grinding wheel is in chemical reaction with oxygen when contacting with the surface of a steel billet to generate ferric oxide and absorb heat generated in the steel billet and grinding, so that the resin is protected from high-temperature carbonization, the strength and the grinding performance of the heavy-load grinding wheel are maintained, meanwhile, the pyrite is a natural mineral product with low price and huge reserves, and compared with the zirconium corundum grinding material and the resin binder in the heavy-load grinding wheel, the cost is low, the processing is easy, the compatibility is good, and the like. The sulfur element reacts with oxygen to absorb a large amount of heat, so that the bonding strength of resin is ensured, the service life of the heavy-load grinding wheel is greatly prolonged on the basis of reducing the cost of raw materials, the advantage is that the production cost of the heavy-load grinding wheel is reduced, more importantly, repeated heating of steel billets is avoided, and the production efficiency and the quality of the steel billets are greatly improved on the basis of reducing the number of grinding wheels.
It is worth to be noted that, in the step 3, in the kiln firing process:
firing for 9 hours when the temperature in the kiln is increased from 25 ℃ to 100 ℃;
when the temperature in the kiln is raised to 100 ℃, keeping 100 ℃ for firing for 2 hours;
heating the temperature in the kiln from 100 ℃ to 110 ℃ and firing for 3 hours;
heating the temperature in the kiln from 110 ℃ to 145 ℃ and firing for 7 hours;
the temperature in the kiln is raised from 145 ℃ to 150 ℃, and the mixture is fired for 1 hour
The temperature in the kiln is raised from 145 ℃ to 160 ℃, and the mixture is fired for 1 hour
When the temperature in the kiln rises to 160 ℃, the heat is preserved for 8 to 12 hours, the full firing process is ensured, and the product quality of the heavy-load grinding wheel is improved.
When the manufacturing method of the heavy-load grinding wheel for the surface treatment of the continuous casting and rolling high-temperature steel billet is used, the high-sulfur iron ore in the heavy-load grinding wheel is in chemical reaction with oxygen when in contact with the surface of the steel billet to generate iron oxide, and the iron oxide absorbs heat generated in the steel billet and grinding, so that resin on the surface of the grinding wheel is protected from being carbonized at high temperature, the strength and the grinding performance of the heavy-load grinding wheel are maintained, meanwhile, the sulfur iron ore is a natural mineral product with low price and huge reserves, and compared with the zirconium abrasive and resin binder in the heavy-load grinding wheel, the manufacturing method has the characteristics of low cost, easiness in processing, good compatibility and the like, the production cost of the heavy-load grinding wheel is reduced, more importantly, repeated heating of the steel billet is avoided, and the production efficiency and the quality of the.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A manufacturing method of a heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billets is characterized by comprising the following steps: the method comprises the following steps:
step 1: manufacturing an abrasive, screening high-grade pyrite, purifying, and crushing to obtain the abrasive, wherein the content of sulfur in the abrasive is not less than 54%, the content of iron in the abrasive is not less than 44%, the content of water in the abrasive is not more than 0.5%, the content of silicon dioxide in the abrasive is not more than 1.5%, and the real density of the abrasive is not less than 4.85g/cm3The pH value is as follows: 5.0-7.0;
step 2: mixing materials to obtain the mixed abrasive, which comprises the following steps in sequence:
step 21: adding liquid resin mixed abrasive to ensure that the surface of each abrasive particle is fully soaked in the liquid resin;
step 22: adding resin powder, and fully mixing to ensure that the resin powder fully wraps the surface of the grinding material;
step 23: adding high-sulfur iron ore powder, and uniformly mixing;
and step 3: the mixed abrasive is pressed into a mould and then is fired in a kiln;
and 4, step 4: opening the kiln, naturally cooling to normal temperature, and taking out of the kiln to obtain a finished heavy-load grinding wheel;
and 5: and (5) after the grinding wheel is taken out of the kiln, checking the appearance of the heavy-load grinding wheel, and performing a rotation strength test.
2. The method for manufacturing the heavy-load grinding wheel for the surface treatment of the continuous casting and rolling high-temperature billet according to claim 1, wherein the heavy-load grinding wheel comprises: in the step 3, in the kiln firing process:
firing for 9 hours when the temperature in the kiln is increased from 25 ℃ to 100 ℃;
when the temperature in the kiln is raised to 100 ℃, keeping 100 ℃ for firing for 2 hours;
heating the temperature in the kiln from 100 ℃ to 110 ℃ and firing for 3 hours;
heating the temperature in the kiln from 110 ℃ to 145 ℃ and firing for 7 hours;
the temperature in the kiln is raised from 145 ℃ to 150 ℃, and the mixture is fired for 1 hour
The temperature in the kiln is raised from 145 ℃ to 160 ℃, and the mixture is fired for 1 hour
When the temperature in the kiln rises to 160 ℃, the temperature is kept for 8 to 12 hours.
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| CN202011476286.2A CN112659001A (en) | 2020-12-15 | 2020-12-15 | Manufacturing method of heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billet |
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| CN202011476286.2A CN112659001A (en) | 2020-12-15 | 2020-12-15 | Manufacturing method of heavy-load grinding wheel for surface treatment of continuous casting and rolling high-temperature billet |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161183A (en) * | 2010-10-25 | 2011-08-24 | 江苏华东砂轮有限公司 | High-speed resin heavy-load grinding wheel |
| CN102343560A (en) * | 2011-10-20 | 2012-02-08 | 宁波大华砂轮有限公司 | Resin grinding wheel and manufacturing method thereof |
| CN102513947A (en) * | 2011-09-20 | 2012-06-27 | 宁波鼎鑫砂轮制造有限公司 | Manufacturing method of heavy-duty grinding resin wheel |
| CN104625978A (en) * | 2013-11-14 | 2015-05-20 | 江苏华辰磨料磨具有限公司 | Large-standard high-speed resin heavy duty grinding wheel for grinding steel billet |
| CN108214338A (en) * | 2017-12-19 | 2018-06-29 | 黄山安卡重负荷砂轮有限公司 | A kind of production technology of interface modification type high-strength environment-friendly heavy duty grinding wheel |
| CN109759962A (en) * | 2019-02-18 | 2019-05-17 | 昆山鑫轮超硬磨具有限公司 | A kind of heavy load resin wheel and its manufacturing method for steel billet grinding |
| CN109968221A (en) * | 2017-12-27 | 2019-07-05 | 山东圣泉新材料股份有限公司 | High-intensitive heavy duty grinding wheel and preparation method |
| CN110977793A (en) * | 2019-12-20 | 2020-04-10 | 郑州九天工贸有限公司 | Resin grinding wheel and preparation method thereof |
| CN112045576A (en) * | 2020-09-09 | 2020-12-08 | 汪昭 | High-temperature-resistant high-strength resin grinding wheel and preparation process thereof |
-
2020
- 2020-12-15 CN CN202011476286.2A patent/CN112659001A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161183A (en) * | 2010-10-25 | 2011-08-24 | 江苏华东砂轮有限公司 | High-speed resin heavy-load grinding wheel |
| CN102513947A (en) * | 2011-09-20 | 2012-06-27 | 宁波鼎鑫砂轮制造有限公司 | Manufacturing method of heavy-duty grinding resin wheel |
| CN102343560A (en) * | 2011-10-20 | 2012-02-08 | 宁波大华砂轮有限公司 | Resin grinding wheel and manufacturing method thereof |
| CN104625978A (en) * | 2013-11-14 | 2015-05-20 | 江苏华辰磨料磨具有限公司 | Large-standard high-speed resin heavy duty grinding wheel for grinding steel billet |
| CN108214338A (en) * | 2017-12-19 | 2018-06-29 | 黄山安卡重负荷砂轮有限公司 | A kind of production technology of interface modification type high-strength environment-friendly heavy duty grinding wheel |
| CN109968221A (en) * | 2017-12-27 | 2019-07-05 | 山东圣泉新材料股份有限公司 | High-intensitive heavy duty grinding wheel and preparation method |
| CN109759962A (en) * | 2019-02-18 | 2019-05-17 | 昆山鑫轮超硬磨具有限公司 | A kind of heavy load resin wheel and its manufacturing method for steel billet grinding |
| CN110977793A (en) * | 2019-12-20 | 2020-04-10 | 郑州九天工贸有限公司 | Resin grinding wheel and preparation method thereof |
| CN112045576A (en) * | 2020-09-09 | 2020-12-08 | 汪昭 | High-temperature-resistant high-strength resin grinding wheel and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 化学工业部人事教育司等: "《焙烧与工业炉》", 31 December 1997 * |
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Application publication date: 20210416 |