CN102371396A - Method for manufacturing carborundum saw blade and rolling equipment for carborundum saw blade - Google Patents
Method for manufacturing carborundum saw blade and rolling equipment for carborundum saw blade Download PDFInfo
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- CN102371396A CN102371396A CN2010102551744A CN201010255174A CN102371396A CN 102371396 A CN102371396 A CN 102371396A CN 2010102551744 A CN2010102551744 A CN 2010102551744A CN 201010255174 A CN201010255174 A CN 201010255174A CN 102371396 A CN102371396 A CN 102371396A
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Abstract
The invention discloses a method for manufacturing a carborundum saw blade and rolling equipment for the carborundum saw blade. The method comprises the following steps of: heating a roll-shaped narrow steel belt serving as a raw material by using a roller-hearth heating furnace, rolling by using a two-roller rolling mill for one pass, shearing laterally and cutting into sections by using a flying shear, cooling on a stepping cooling bed, stretching, shearing and punching to obtain the carborundum saw blade. The carborundum saw blade has higher tensile strength, hardness and abrasive resistance. The invention also provides rolling equipment, which comprises the roller-hearth heating furnace, the two-roller rolling mill, the flying shear, the stepping cooling bed, a stretcher, a roller way, a shearing machine, a punching machine and the like.
Description
Technical field
The present invention relates to a kind of cutlery of processing of stone, especially relate to a kind of method of rolling sand saw blade, the invention still further relates to the rolling equipment of making sand saw blade, this rolling equipment is applicable to the making 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 the technology of making sawing granite sand saw blade is; Steel billet through several rolling mills, rolling a plurality of passages, is processed sand saw blade through shearing segmentation, cooling, stretching, shearing, punching through the pusher-type furnace heating.This technology steel billet material is short, and billet heating temperature is high, and production procedure is long, bad mechanical property, easy fracture.
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 discloses a kind of manufacturing approach of sand saw blade, and its technical process is to adopt the steel grade of U75V; 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, rolling pass is many, and billet heating temperature is high, and sand saw blade crystal grain is thick, bad mechanical property, easy fracture.
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.Its rail material source is complicated, and material can not guarantee to have only tens kilograms at the bottom of every one steel rail, and lumber recovery can only reach about 70%.Therefore, be necessary the manufacturing approach and the rolling equipment thereof of sand saw blade are improved.
Summary of the invention
The objective of the invention is to overcome existing sand saw blade production procedure length, many, the sand saw blade bad mechanical property of rolling pass made; The problem of easy fracture; Provide a kind of employing web-like 65Mn narrow steel strip as raw material, through the manufacturing approach and the rolling equipment thereof of the rolling sand saw blade that forms.This technology uses rolling mill few, and rolling pass is few, and blank heating temperature is low, and sand saw blade crystal grain is thin, intensity is high.
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:
(a) raw material is prepared; Adopt web-like 65Mn narrow steel strip as the sand saw blade raw material; Thickness is than the thick 0.5-2mm of finished sand saw blade; Width is than the narrow 0.3-1mm of finished sand saw blade, and the Main Ingredients and Appearance scope of web-like 65Mn narrow steel strip is: C=0.62～0.70, Si=0.17～0.37, Mn=0.90～1.20, Cr≤0.25, Ni≤0.30, Cu≤0.25;
(b) heat treated: web-like 65Mn narrow steel strip sent in the roller hearth type heating furnace heat, web-like 65Mn narrow steel strip is heated to 850 ℃～980 ℃;
(c) with the heating web-like 65Mn narrow steel strip through a rolling passage of two-roller mill, roll into thickness 3-6mm, width 90-130mm semi-finished product sand saw blade;
(d) with flying shearing machine to after rolling, the segmentation of operating semi-finished product sand saw blade lateral shear;
(e) with the semi-finished product sand saw blade after the segmentation, be sent on the walking beam cooler and cool off;
(f) stretching-machine stretches to cooled semi-finished product sand saw blade;
(g) the semi-finished product sand saw blade after using cutter to stretch is cut and is cut lengths;
(h) 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.
Realize the rolling equipment in a kind of manufacturing approach of sand saw blade, it is characterized in that: the rolling equipment of said sand saw blade comprises: roller hearth type heating furnace, two-roller mill, flying shearing machine, walking beam cooler, stretching-machine, roller-way, cutter, perforating press etc.
Adopting web-like 65Mn narrow steel strip is raw material, only with the rolling a time of rolling mill, so web-like 65Mn narrow steel strip heating-up temperature is lower than existing billet heating temperature; Can know that by Technology for Heating Processing along with the rising of the heating-up temperature of steel, austenite crystal is grown up gradually; The sand saw blade crystal grain made from the method is thin; Having overcome effectively is the saw blade bad mechanical property of raw material production with the steel billet, and all foot phenomenons not such as easy fracture have higher tensile strength and wearability; Higher hardness, enough mechanical performances.
Description of drawings
Fig. 1 is a rolling mill practice floor plan of the present invention;
Fig. 2 be the present invention the sand saw blade product figure that will make.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
As shown in Figure 1, be rolling mill practice floor plan of the present invention, it is that raw material has proposed new preparation method that the present invention adopts web-like 65Mn narrow steel strip, its major technique characteristic is:
The preparation method of said sand saw blade comprises following processing step:
(a) raw material is prepared; Finished sand saw blade thickness 4.2mm, width 100mm, length 3500mm; Adopt web-like 65Mn narrow steel strip 1 as the sand saw blade raw material; The thick 5.2mm of web-like 65Mn narrow steel strip, width 95.5mm, the Main Ingredients and Appearance scope of web-like 65Mn narrow steel strip is: C=0.62～0.70, Si=0.17～0.37, Mn=0.90～1.20, Cr≤0.25, Ni≤0.30, Cu≤0.25;
(b) heat treated: web-like 65Mn narrow steel strip is sent into heating in the combustion gas roller hearth type heating furnace 2, and heating furnace length 50mm, web-like 65Mn narrow steel strip 1 are heated to 850 ℃～980 ℃;
(c) with the web-like narrow steel strip 1 of heating, a φ 300mm two-roller mill 3 rolling passages are sent in manual work to, roll into thickness 4.2mm, the semi-finished product sand saw blade of width 100mm;
(d) with 4 pairs of flying shearing machine rolling after, operating semi-finished product sand saw blade lateral shear, every section to be divided into 3600mm long;
(e), be sent to cooling on the walking beam cooler 5 with the semi-finished product sand saw blade after the segmentation;
(f) stretching-machine is clamped the stretching of cooled semi-finished product sand saw blade both sides;
(g) the semi-finished product sand saw blade after using cutter to stretch is cut and is cut lengths 3500mm;
(h) 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.
For making web-like 65Mn narrow steel strip 1 roll into sand saw blade; Above-mentioned manufacturing approach will adopt rolling equipment, and this rolling equipment comprises roller hearth type heating furnace 2, φ 300mm two-roller mill 3, flying shearing machine 4, walking beam cooler 5, stretching-machine, roller-way 6, cutter, perforating press etc.
As shown in Figure 2, be the present invention the sand saw blade product figure that will make.
With the sand saw blade that this method and rolling equipment thereof are processed, tensile strength 1000～1176MPa, percentage elongation 8～10%, hardness 33～36.5HRC.
Claims (2)
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:
(a) raw material is prepared; Adopt web-like 65Mn narrow steel strip (1) as the sand saw blade raw material; Thickness is than the thick 0.5-2mm of finished sand saw blade; Width is than the narrow 0.3-1mm of finished sand saw blade, and the Main Ingredients and Appearance scope of web-like 65Mn narrow steel strip (1) is: C=0.62～0.70, Si=0.17～0.37, Mn=0.90～1.20, Cr≤0.25, Ni≤0.30, Cu≤0.25:
(b) heat treated: the narrow steel of above-mentioned web-like (1) band is sent into heating in the roller hearth type heating furnace (2), and above-mentioned web-like 65Mn narrow steel strip (1) is heated to 850 ℃～980 ℃;
The above-mentioned web-like 65Mn narrow steel strip (1) that (c) will heat rolls into thickness 3-6mm through the rolling passage of a two-roller mill (3), width 90-130mm semi-finished product sand saw blade;
(d) with flying shearing machine (4) to after rolling, the segmentation of operating above-mentioned semi-finished product sand saw blade lateral shear;
(e), be sent to (5) cooling on the walking beam cooler with the above-mentioned semi-finished product sand saw blade after the segmentation;
(f) stretching-machine stretches to cooled above-mentioned semi-finished product sand saw blade;
(g) the above-mentioned semi-finished product sand saw blade after using cutter to stretch is cut and is cut lengths;
(h) utilize punch press cut for the above-mentioned semi-finished product sand saw blade two ends after the cut lengths respectively towards open-work, process sand saw blade.
2. realize the rolling equipment in the manufacturing approach of the said a kind of sand saw blade of claim 1, it is characterized in that: the rolling equipment of sand saw blade comprises: above-mentioned roller hearth type heating furnace (2), an above-mentioned two-roller mill (3), above-mentioned flying shearing machine (4), above-mentioned walking beam cooler (5), above-mentioned roller-way (6), and stretching-machine, cutter, perforating press etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102551744A CN102371396A (en) | 2010-08-17 | 2010-08-17 | Method for manufacturing carborundum saw blade and rolling equipment for carborundum saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102551744A CN102371396A (en) | 2010-08-17 | 2010-08-17 | Method for manufacturing carborundum saw blade and rolling equipment for carborundum saw blade |
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| Publication Number | Publication Date |
|---|---|
| CN102371396A true CN102371396A (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102551744A Pending CN102371396A (en) | 2010-08-17 | 2010-08-17 | Method for manufacturing carborundum saw blade and rolling equipment for carborundum saw blade |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586538A (en) * | 2013-11-06 | 2014-02-19 | 华侨大学 | Method and device for manufacturing continuous long-distance braze-welded wire saw |
| CN108890442A (en) * | 2018-07-04 | 2018-11-27 | 湖北申田新材料科技有限公司 | A kind of saw blade burr removal device |
-
2010
- 2010-08-17 CN CN2010102551744A patent/CN102371396A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586538A (en) * | 2013-11-06 | 2014-02-19 | 华侨大学 | Method and device for manufacturing continuous long-distance braze-welded wire saw |
| CN108890442A (en) * | 2018-07-04 | 2018-11-27 | 湖北申田新材料科技有限公司 | A kind of saw blade burr removal device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Guangyu Document name: Notification of Publication of the Application for Invention |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Guangyu Document name: Notification of before Expiration of Request of Examination as to Substance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120314 |