CN102941539A - Production method of grinding wheel for steel tube - Google Patents
Production method of grinding wheel for steel tube Download PDFInfo
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- CN102941539A CN102941539A CN2012104870599A CN201210487059A CN102941539A CN 102941539 A CN102941539 A CN 102941539A CN 2012104870599 A CN2012104870599 A CN 2012104870599A CN 201210487059 A CN201210487059 A CN 201210487059A CN 102941539 A CN102941539 A CN 102941539A
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Abstract
The invention discloses a production method of a grinding wheel for a steel tube. The grinding wheel comprises, by weight, 100 parts of abrasives, wherein 30-50 parts of fused zirconia alumina, 50-70 parts of brown fused alumina, 17-25 parts of phenolic resin, 4-8 parts of pyrite, 1-3 parts of feldspar, 1-3 parts of cryolite, 1-3 parts of carbon black and 3-5 parts of gypsum. In a molding process, feeding is performed for three times and two wheel rims are placed in a non-grinding area; and in a hardening process, segmented heating or heat preservation is performed, the temperature is heated from a normal temperature to 160 DEG C gradually, and the hardening time is 14-16 hours. According to the method, mixed abrasives containing the fused zirconia alumina and the brown fused alumina with multi-granularity are used, the cost of the raw materials is effectively reduced, and the cutting capacity and strength of the grinding wheel are improved; on-load grinding is achieved and the grinding efficiency is improved due to placement of the two wheel rims; the hardening temperature and time are optimized and improved, and the effect is ideal; and the porosity of the grinding wheel is enlarged, the cooling performance is good, the grinding wheel is not easy to explode, and the safety factor is high.
Description
Technical field
The present invention relates to a kind of emery wheel, specifically relate to a kind of preparation method of grinding the steel pipe emery wheel.
Background technology
Little daily apparatus, furniture, water supply and sewage, air feed, ventilation and heating facility to people arrives greatly the used firearms of exploitation, national defence and the space flight of manufacturing, subterranean resource of various agricultural machinery apparatus, bullet, guided missile, rocket etc. and all be unable to do without steel pipe.Steel pipe is inseparable with human life, activity in production, and the emery wheel that therefore grinds steel pipe also has very important position.The mill steel pipe emery wheel of present domestic employing mostly is ordinary resin corundum sand wheel, and its compression strength, heat resistance etc. are relatively poor, thereby grinding can only adopt not on-load grinding when using, and cuts the iron amount in the unit interval little, and grinding efficiency is low; The grinding heat that produces during simultaneously grinding is large, easily causes the emery wheel blast, uses safety coefficient little.Minority producer is with heavy duty grinding wheel or fused alumina zirconia emery wheel, although result of use is better, because heavy duty grinding wheel or fused alumina zirconia emery wheel are expensive, the grinding cost is very high, and producer can not bear.
Summary of the invention
The object of the invention is to solve the weak point that grinding steel pipe in the prior art exists, a kind of preparation method of simple for production, cost of material is low, stock-removing efficiency is high, heat resistance is good, anti-pressure ability is strong, safety coefficient is large mill steel pipe emery wheel is provided.
Technical scheme of the present invention is: a kind of mill steel pipe method for manufacturing grinding wheel, comprise batching, batch mixing, moulding, hardening process, its improvements are to adopt in the described burden process raw material and weight proportion umber to be: 100 parts in abrasive material, wherein 30 ~ 50 parts of fused alumina zirconias, 50 ~ 70 parts in brown corundum, take abrasive material as 100 parts of calculating, add 17 ~ 25 parts in phenolic resins, 4 ~ 8 parts of pyrite, 1 ~ 3 part of feldspar, 1 ~ 3 part of ice crystal, 1 ~ 3 part of carbon black, 3 ~ 5 parts in gypsum; Described molding procedure is divided and is fed intake for three times: throw molding mass 1/3 for the first time, use the scraper dedicated with projection to strike off after stirring material, in non-grinding area, form a groove concentric with mould circle, plug, in groove, place steel ring, throw again the second defective material, material heavily is molding mass 1/3, repeat aforesaid operations, place onesize steel ring, throw again for the third time material, strike off with flat scraper plate after stirring material, be pressed into desired thickness after covering template; Described hardening process carries out segmentation heats or is incubated, and namely is divided into 4 ~ 5 time periods progressively to heat or be incubated, and is progressively heated to 160 ℃ by normal temperature, and the accumulative total firm time is 14 ~ 16 hours.
Further scheme is: adopt raw material and weight proportion umber to be in the described burden process: 100 parts in abrasive material, wherein 35 parts of fused alumina zirconias, 65 parts in brown corundum, take abrasive material as 100 parts of calculating, add 20 parts in phenolic resins, 5 parts of pyrite, 1 part of feldspar, 3 parts of ice crystals, 1 part of carbon black, 4 parts in gypsum; The granularity of described fused alumina zirconia is F10 ~ F16; The thin grain size number of the fineness ratio fused alumina zirconia of described brown corundum.
The present invention adopts above technical scheme, and is simple for production, and equipment, moulding press, the hardening furnace of batch mixing do not had specific (special) requirements, reached the purpose of simple process.Utilize fused alumina zirconia and the varigrained compound abrasive of brown corundum, both effectively reduced cost of material, played again the effect that improves emery wheel cutting power and intensity.After the method is even with mixing of materials, drop in the grinding wheel forming molds by three batches, in non-grinding area, put into two steel rings, both effectively improved the compression strength of emery wheel, can be by the test of 160 ~ 180kg pressurization, thereby realized the on-load grinding, cut the iron amount in unit interval and increase, improved again the tensile strength of emery wheel simultaneously, linear velocity is high, can arrive more than the 65m/s, thereby improve grinding efficiency.The method is optimized the temperature and time of sclerosis, and hardening process has been done improvement, and effect is even more ideal.The granularity of the abrasive material that the present invention adopts is thicker, has strengthened the porosity of emery wheel, perfect heat-dissipating, and not easy to explode, safety coefficient is high.
The specific embodiment
Embodiment 1
Select F12 fused alumina zirconia and F14 palm fibre corundum as abrasive material, each raw material weight umber ratio is: 35 parts of F12 fused alumina zirconias, 65 parts in F14 palm fibre corundum, 20 parts in phenolic resins,, 5 parts of pyrite, 1 part of feldspar, 3 parts of ice crystals, 1 part of carbon black, 4 parts in gypsum; Accurate above-mentioned various raw materials of weighing, pour into mix discharging after half an hour in the S type batch mixer, sieve rear for subsequent use.Compressing emery wheel specification is 1-400 * 50 * 127 on hydraulic press, every abrasive wheel forming substance is 14.4kg, throw for the first time that molding mass weight for subsequent use is that 4.8 kg are in mould after the above-mentioned mixing, use the scraper dedicated with projection to strike off after stirring material, in non-grinding area, form a groove concentric with mould circle, plug, groove centre-to-centre spacing is 240mm, places ￠ 240mm steel ring in groove; Throw for the second time the molding mass that weight is 4.8 kg, repeat aforesaid operations, place onesize steel ring; Throw for the third time the molding mass that weight is 4.8 kg, strike off with flat scraper plate after stirring material, suppress after covering template, thickness is 50mm; Harden in the conventional hardening furnace of blank after the moulding, hardening process sees Table 1, comes out of the stove after temperature is reduced to 40 ℃, does not process, and emery wheel is checked rear packing warehouse-in and shipping.
Table 1:
Embodiment 2
Select F10 fused alumina zirconia and F12 palm fibre corundum as abrasive material, each raw material weight umber ratio is: 40 parts of F12 fused alumina zirconias, 60 parts in F14 palm fibre corundum, 23 parts in phenolic resins,, 7 parts of pyrite, 2 parts of feldspars, 2 parts of ice crystals, 3 parts of carbon blacks, 3 parts in gypsum; Accurate above-mentioned various raw materials of weighing, pour into mix discharging after half an hour in the tapered batch mixer, sieve rear for subsequent use.Compressing emery wheel specification is 1-250 * 40 * 32 on hydraulic press, every abrasive wheel forming substance is 4.8kg, throw for the first time that molding mass weight for subsequent use is that 1.6 kg are in mould after the above-mentioned mixing, use the scraper dedicated with projection to strike off after stirring material, in non-grinding area, form a groove concentric with mould circle, plug, groove centre-to-centre spacing is 120mm, places ￠ 120mm steel ring in groove; Throw for the second time the molding mass that weight is 1.6 kg, repeat aforesaid operations, place onesize steel ring; Throw for the third time the molding mass that weight is 1.6 kg, strike off with flat scraper plate after stirring material, suppress after covering template, thickness is 40mm; Harden in the conventional hardening furnace of blank after the moulding, hardening process sees Table 2, comes out of the stove after temperature is reduced to 40 ℃, does not process, and emery wheel is checked rear packing warehouse-in and shipping.
Table 2:
Claims (3)
1. one kind is ground the steel pipe method for manufacturing grinding wheel, comprise batching, batch mixing, moulding, hardening process, it is characterized in that adopting in the described burden process raw material and weight proportion umber to be: 100 parts in abrasive material, wherein 30 ~ 50 parts of fused alumina zirconias, 50 ~ 70 parts in brown corundum, take abrasive material as 100 parts of calculating, add 17 ~ 25 parts in phenolic resins, 4 ~ 8 parts of pyrite, 1 ~ 3 part of feldspar, 1 ~ 3 part of ice crystal, 1 ~ 3 part of carbon black, 3 ~ 5 parts in gypsum; Described molding procedure is divided and is fed intake for three times: throw molding mass 1/3 for the first time, use the scraper dedicated with projection to strike off after stirring material, in non-grinding area, form a groove concentric with mould circle, plug, in groove, place steel ring, throw again the second defective material, material heavily is molding mass 1/3, repeat aforesaid operations, place onesize steel ring, throw again for the third time material, strike off with flat scraper plate after stirring material, be pressed into desired thickness after covering template; Described hardening process carries out segmentation heats or is incubated, and namely is divided into 4 ~ 5 time periods progressively to heat or be incubated, and is progressively heated to 160 ℃ by normal temperature, and the accumulative total firm time is 14 ~ 16 hours.
2. by the described mill steel pipe of claim 1 method for manufacturing grinding wheel, it is characterized in that adopting in the described burden process raw material and weight proportion umber to be: 100 parts in abrasive material, wherein 35 parts of fused alumina zirconias, 65 parts in brown corundum, take abrasive material as 100 parts of calculating, add 20 parts in phenolic resins, 5 parts of pyrite, 1 part of feldspar, 3 parts of ice crystals, 1 part of carbon black, 4 parts in gypsum.
3. by claim 1 and the described mill steel pipe of claim 2 method for manufacturing grinding wheel, describedly it is characterized in that the granularity of fused alumina zirconia is F10 ~ F16; The thin grain size number of the fineness ratio fused alumina zirconia of described brown corundum.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104870599A CN102941539A (en) | 2012-11-27 | 2012-11-27 | Production method of grinding wheel for steel tube |
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| CN2012104870599A CN102941539A (en) | 2012-11-27 | 2012-11-27 | Production method of grinding wheel for steel tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753414A (en) * | 2014-01-02 | 2014-04-30 | 伊川县东风磨料磨具有限公司 | Steel rail cutting abrasive wheel |
| CN108098605A (en) * | 2017-12-30 | 2018-06-01 | 新乡市中开科技发展有限公司 | A kind of rail grinding train special grinding wheel and preparation method thereof |
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| GB900589A (en) * | 1960-03-31 | 1962-07-11 | Cincinnati Milling Machine Co | Abrasive wheel composition |
| CN1579709A (en) * | 2003-08-14 | 2005-02-16 | 马林召 | High strength grinding wheel and its preparation method |
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2012
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| GB900589A (en) * | 1960-03-31 | 1962-07-11 | Cincinnati Milling Machine Co | Abrasive wheel composition |
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| CN102653078A (en) * | 2012-05-16 | 2012-09-05 | 常州市洪福砂轮有限公司 | Resin sand wheel containing sulfuric acid slag for milling steel rail |
| CN102699834A (en) * | 2012-05-18 | 2012-10-03 | 曹现珂 | Novel fibre reinforced resin grinding wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753414A (en) * | 2014-01-02 | 2014-04-30 | 伊川县东风磨料磨具有限公司 | Steel rail cutting abrasive wheel |
| CN108098605A (en) * | 2017-12-30 | 2018-06-01 | 新乡市中开科技发展有限公司 | A kind of rail grinding train special grinding wheel and preparation method thereof |
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Application publication date: 20130227 |