CN102632298A - Preparation method of carborundum saw blade - Google Patents
Preparation method of carborundum saw blade Download PDFInfo
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- CN102632298A CN102632298A CN2011100403992A CN201110040399A CN102632298A CN 102632298 A CN102632298 A CN 102632298A CN 2011100403992 A CN2011100403992 A CN 2011100403992A CN 201110040399 A CN201110040399 A CN 201110040399A CN 102632298 A CN102632298 A CN 102632298A
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Abstract
The invention discloses a preparation method of a carborundum saw blade. The preparation method comprises the following steps: cutting the waste top crops of the two ends of a U75 steel rail rolled in a steel rail plant into steel rail bases having a certain lengths, wherein the cut steel rail bases used as raw materials for the carborundum saw blade; heating the steel rail bases; rolling the steel rail bases with a rolling mill; and carrying out cooling, coarse cutting, tension, precise cutting and punching to produce the carborundum saw blade. The carborundum saw blade has high tensile strength, hardness and abrasive resistance; the carborundum saw blade has the same hardness, and the chemical component materials of the carborundum saw blade are controllable; and the carborundum saw blade contains V and has no interior endurance crack, thus the property of the carborundum saw blade is stable.
Description
Technical field
The present invention relates to a kind of cutlery of processing of stone, especially relate to a kind of manufacturing approach of sand saw blade.
Background technology
At present to cut the capital equipment of processing be to be abrasive material with the steel sand to the big bladed saw of granite, relies on the framework sand saw of one group of sand saw blade as the sawing cutter, and framework sand saw generally once uses 100-150 bar sand saw blade simultaneously; One Chinese patent application publication No. CN101767271A, Shen Qing Publication day 2010.07.07, name is called; The preparation method of the steel disc of grinding and cutting granite building stones; Disclose a kind of manufacturing approach of sand saw blade, its technical process is to adopt the steel grade of U75V, and cross section is that the steel billet of 90 * 90mm is a raw material; Steel billet is heated 1000-1079 ℃; Through five passage roughing, six passage finish rolling have been made sand saw blade through slow cooling, leveling, straightening, drawing, shearing, punching, nitriding again.Its weak point is that nitridation process is complicated, and rolling pass is many, and the cost high user can't be accepted.
One Chinese patent application publication number CN1511968A, Shen Qing Publication day 2004.07.14, name is called; The granite saw blade is used steel, and its phosphorus content is 0.50%～0.80%, and the phosphorus content scope is wide; The sand saw blade of under the same process condition, producing, hardness is different, and the abrasion resisting performance is different.
Chinese patent ZL02135565.7 discloses a kind of method of making cutting granite saw blade steel band, uses waste and old superseded rail to be raw material, and there is fatigue crack in waste and old steel rail inside, the sand saw blade fatiguability fracture of manufacturing.
One Chinese patent application publication No. CN1486812A, Shen Qing Publication day 2004.04.07, name is called; A kind of manufacturing approach of framework sand saw blade and rolling equipment thereof; Disclose a kind of manufacturing approach of sand saw blade, its technical process is to adopt waste and old steel rail that railway use as raw material, carries out the cutting machine processing; With being heated to 1100 ℃～1150 ℃, rolling 5～8 passages at the bottom of the rail, made sand saw blade through shearing segmentation, cooling, stretching, shearing, punching.The waste and old steel rail material source that railway was used is complicated, and make and the overseas-built waste and old steel rail of domestic each steel mill is arranged, and has the die casting that also has of continuous casting production to produce; Common rail steel, microalloy rail steel and low-alloy rail steel are arranged; Various rail are mingled in together, and its phosphorus content of the waste and old steel rail that railway was used is 0.40%～0.70%, and the phosphorus content scope is wide; Phosphorus content is low excessively, and carbon is the effective elements of appreciable impact sand saw blade intensity and hardness.The mechanical performance of sand saw blade depends on the chemical composition of sand saw blade; Because the influence of chemical composition, the sand saw blade of under the same process condition, producing uses the quick abrasion that has on the same group; The wearing and tearing that have are slow; The slow sand saw blade of the degree of wear has to change when changing, and influences the ordinary production of stone material factory.There is fatigue crack in the waste and old steel rail inside that railway was used, processes behind the sand saw blade micro-crack and develops gradually and make the sand saw blade fracture.The sand saw blade anti-wear performance that the waste and old steel rail that railway was used is processed is poor.Therefore, be necessary the manufacturing approach of sand saw blade is improved.
Summary of the invention
The object of the invention provides a kind of manufacturing approach of sand saw blade.It overcomes the deficiency on the prior art, and with the sand saw blade that this method is made, there is not fatigue crack in inside, easy fracture not, and the sand saw blade anti-wear performance is good, and chemical composition can guarantee that the sand saw blade hardness of under the same process condition, producing is identical.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
A kind of manufacturing approach of sand saw blade is characterized in that: the preparation method of said sand saw blade comprises following processing step:
1) cut off processing: select the useless crop at rail factory rolling U75V rail two ends, it is 0.5m～2m that the crop that will give up cuts into length;
2) chemical analysis of useless crop is: C, 0.71～0.80%, Si, 0.50～0.80%, Mn, 0.70～1.05%, P＜0.030%, S＜0.030%, V, 0.04～0.12%;
3) cutting is handled: fall with will the give up rail undercutting of crop of CUT, adopt at the bottom of the rail as the sand saw blade raw material;
4) heat treated: push heating in the heating furnace at the bottom of the rail, be heated to 1100 ℃～1150 ℃ at the bottom of the rail;
5) rolling: as, to roll into thickness 3-6mm, width 90-130mm semi-finished product sand saw blade with rolling 5～8 passages of process at the bottom of the rail of heating;
6) cooling processing: rolling intact semi-finished product sand saw blade is sent to cooling naturally on the cold bed;
7) bulk pruning: will cut through the semi-finished product sand saw blade bulk pruning of supercooling with cutter;
8) tension straingtening: the semi-finished product sand saw blade tension straingtening of stretching-machine after to bulk pruning;
9) fine pruning: the semi-finished product sand saw blade after using cutter to stretch is cut and is cut lengths;
10) punching: utilize punch press cut for the semi-finished product sand saw blade two ends after the cut lengths respectively towards open-work, process sand saw blade.
The manufacturing approach of sand saw blade of the present invention is compared with the manufacturing approach of existing sand saw blade; Its advantage is, sand saw blade has same rigidity, and the chemical component fluctuation scope of sand saw blade is to be controlled in the narrow bound; C, 0.71～0.80% phosphorus content height and phosphorus content narrow range.It is low to contain S.P content in the sand saw blade, contains V in the sand saw blade, and V adds in the steel as alloying element, hinders austenite crystal and grows up, crystal grain thinning, the intensity and the toughness of raising sand saw blade.The sand saw blade crystal grain made from the method is thin, has higher tensile strength and wearability, higher hardness.Its chemical composition material of sand saw blade that this technology system is made is controlled, has to chase after retrospective.The sand saw blade that the waste and old steel rail that its tensile strength was used than railway is made improves about 100M Pa, and the inherent quality of saw blade is significantly improved, and does not have inner fatigue crack, and performance is also more stable.The useless crop at rail two ends generally melts down smelting as steel scrap, belongs to refuse reclamation.
Description of drawings
Fig. 1 be the present invention the sand saw blade product figure that will make.
Fig. 2 is roll out steel rail figure, useless crop figure, rail base map.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
Embodiment 1: as shown in Figure 2
A kind of manufacturing approach of sand saw blade comprises following processing step:
1) cut off processing: select the useless crop 1 at rail factory rolling U75V rail 3 two ends, it is 1m that the crop 1 that will give up cuts into length;
2) chemical analysis of useless crop 1 is: C, 0.71～0.80%, Si, 0.50～0.80%, Mn, 0.70～1.05%, P＜0.030%, S＜0.030%, V, 0.04～0.12%;
3) cutting is handled: will give up at the bottom of the rail of crop with CUT and 2 cut away, and adopt at the bottom of the rail 2 as the sand saw blade raw material;
4) heat treated: 2 push heating in the heating furnace at the bottom of the rail, and 2 are heated to 1100 ℃～1150 ℃ at the bottom of the rail;
5) rolling: as, to roll into thickness 4.2mm, width 100mm semi-finished product sand saw blade with rolling 7 passages of 2 processes at the bottom of the rail of heating;
6) cooling processing: rolling intact semi-finished product sand saw blade is sent to cooling naturally on the cold bed;
7) bulk pruning: will cut through the semi-finished product sand saw blade bulk pruning of supercooling with cutter;
8) tension straingtening: the semi-finished product sand saw blade tension straingtening of stretching-machine after to bulk pruning;
9) fine pruning: the semi-finished product sand saw blade after using cutter to stretch is cut and is cut lengths 3500mm;
10) punching: utilize punch press cut for the semi-finished product sand saw blade two ends after the cut lengths respectively towards open-work, process sand saw blade.
With the sand saw blade that this method is processed, tensile strength >=1100MPa, percentage elongation 9～11%, hardness 32～38HRC.
Claims (1)
1. the manufacturing approach of a sand saw blade, it is characterized in that: the preparation method of said sand saw blade comprises following processing step:
1) cut off processing:: select the useless crop at rail factory rolling U75V rail two ends, it is 0.5m～2m that the crop that will give up cuts into length;
2) chemical analysis of above-mentioned useless crop is: C, 0.71～0.80%, Si, 0.50～0.80%, Mn, 0.70～1.05%, P＜0.030%, S＜0.030%, V, 0.04～0.12%;
3) cutting is handled: with CUT the rail undercutting of above-mentioned useless crop is fallen, at the bottom of the employing rail as the sand saw blade raw material;
4) heat treated: heat pushing in the heating furnace at the bottom of the above-mentioned rail, be heated to 1100 ℃～1150 ℃ at the bottom of the above-mentioned rail;
5) rolling: as, to roll into thickness 3-6mm, width 90-130mm semi-finished product sand saw blade with rolling 5～8 passages of process at the bottom of the rail of above-mentioned heating;
6) cooling processing: the semi-finished product sand saw blade that the rolling is intact is sent to cooling naturally on the cold bed;
7) bulk pruning: above-mentioned semi-finished product sand saw blade bulk pruning through supercooling is cut with cutter;
8) tension straingtening: the semi-finished product sand saw blade tension straingtening of stretching-machine after to above-mentioned bulk pruning;
9) fine pruning: the semi-finished product sand saw blade after using cutter with above-mentioned stretching is cut and is cut lengths;
10) punching: utilize punch press above-mentioned cut into the semi-finished product sand saw blade two ends after the cut lengths respectively towards open-work, process sand saw blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100403992A CN102632298A (en) | 2011-02-13 | 2011-02-13 | Preparation method of carborundum saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100403992A CN102632298A (en) | 2011-02-13 | 2011-02-13 | Preparation method of carborundum saw blade |
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| Publication Number | Publication Date |
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| CN102632298A true CN102632298A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100403992A Pending CN102632298A (en) | 2011-02-13 | 2011-02-13 | Preparation method of carborundum saw blade |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425350A (en) * | 2016-12-23 | 2017-02-22 | 诺鑫（南通）医疗技术有限公司 | Preparation method of medical power reciprocating saw blade |
| CN109622780A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of Quick production method of low cost drawing reaming mold |
| CN110586734A (en) * | 2019-09-16 | 2019-12-20 | 临沂市兴华工程机械有限公司 | Method for decomposing and rolling granite alloy saw blade by using steel rail |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3089945A (en) * | 1960-11-07 | 1963-05-14 | Continental Machines | Band saw blade stock and method of making the same |
| CN1073485A (en) * | 1992-07-03 | 1993-06-23 | 重庆长江变速器厂 | The thermal treatment process that is used for bimetal saw blade |
| CN1483563A (en) * | 2002-09-20 | 2004-03-24 | 龙海市多棱锯条有限公司 | Saw blade made from waste and old steel track |
| CN1486812A (en) * | 2003-08-07 | 2004-04-07 | 王树敏 | Making process and rolling apparatus for framed abrasive saw blade |
| CN1511968A (en) * | 2002-12-27 | 2004-07-14 | 王新辉 | Steel for granite saw blade |
| CN101066615A (en) * | 2007-06-29 | 2007-11-07 | 李颂合 | Stone cutting saw blade and its production process |
| CN101767271A (en) * | 2008-12-31 | 2010-07-07 | 沈永平 | Method for manufacturing steel sheet for grinding and cutting granite stones |
-
2011
- 2011-02-13 CN CN2011100403992A patent/CN102632298A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3089945A (en) * | 1960-11-07 | 1963-05-14 | Continental Machines | Band saw blade stock and method of making the same |
| CN1073485A (en) * | 1992-07-03 | 1993-06-23 | 重庆长江变速器厂 | The thermal treatment process that is used for bimetal saw blade |
| CN1483563A (en) * | 2002-09-20 | 2004-03-24 | 龙海市多棱锯条有限公司 | Saw blade made from waste and old steel track |
| CN1511968A (en) * | 2002-12-27 | 2004-07-14 | 王新辉 | Steel for granite saw blade |
| CN1486812A (en) * | 2003-08-07 | 2004-04-07 | 王树敏 | Making process and rolling apparatus for framed abrasive saw blade |
| CN101066615A (en) * | 2007-06-29 | 2007-11-07 | 李颂合 | Stone cutting saw blade and its production process |
| CN101767271A (en) * | 2008-12-31 | 2010-07-07 | 沈永平 | Method for manufacturing steel sheet for grinding and cutting granite stones |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425350A (en) * | 2016-12-23 | 2017-02-22 | 诺鑫（南通）医疗技术有限公司 | Preparation method of medical power reciprocating saw blade |
| CN109622780A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of Quick production method of low cost drawing reaming mold |
| CN110586734A (en) * | 2019-09-16 | 2019-12-20 | 临沂市兴华工程机械有限公司 | Method for decomposing and rolling granite alloy saw blade by using steel rail |
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Application publication date: 20120815 |