CN113385740A - Band saw blade manufacturing method and band saw blade - Google Patents
Band saw blade manufacturing method and band saw blade Download PDFInfo
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- CN113385740A CN113385740A CN202110835796.2A CN202110835796A CN113385740A CN 113385740 A CN113385740 A CN 113385740A CN 202110835796 A CN202110835796 A CN 202110835796A CN 113385740 A CN113385740 A CN 113385740A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000010791 quenching Methods 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 11
- 238000005496 tempering Methods 0.000 claims abstract description 9
- 238000004381 surface treatment Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 10
- 238000005452 bending Methods 0.000 claims description 9
- 241000270708 Testudinidae Species 0.000 abstract description 9
- 238000005096 rolling process Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 24
- 239000010959 steel Substances 0.000 description 24
- 238000003801 milling Methods 0.000 description 16
- 238000003466 welding Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 241000610761 Psathyrotes Species 0.000 description 10
- 239000002131 composite material Substances 0.000 description 10
- 238000000137 annealing Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000012797 qualification Methods 0.000 description 6
- 229910000997 High-speed steel Inorganic materials 0.000 description 5
- 229910000639 Spring steel Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000270666 Testudines Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
- B23D65/04—Making saw teeth by milling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a band saw blade manufacturing method and a band saw blade, wherein the band saw blade manufacturing method comprises the following steps: leveling and straightening the double-metal band saw blade after the teeth are milled, dividing the teeth, quenching, tempering and performing surface treatment in sequence, and further processing the double-metal band saw blade into the double-metal band saw blade; in the process of leveling and straightening the bimetal band saw blade, the surface temperature of the bimetal band saw blade rises, and the surface temperature of the bimetal band saw blade rises by 25-50 ℃ after leveling and straightening. The band saw blade manufactured by the invention can well reduce or even eliminate the internal stress of the band saw blade, thereby leading the deformation caused by the release of the internal stress during quenching to be very small, leading the deformation after quenching such as tortoise back, S bend and the like to be well controlled, and leading the tooth dividing precision and the symmetry degree to be greatly improved by leveling, straightening and rolling the burrs on the two side surfaces of the band saw blade, thus effectively improving the quality and the yield of the band saw blade.
Description
Technical Field
The invention relates to the technical field of band saw blades, in particular to a band saw blade manufacturing method and a band saw blade.
Background
The bimetallic band saw blade is a band-shaped continuous sawing tool, the appearance size of the bimetallic band saw blade has great influence on the use performance, wherein the turtle back mainly influences the verticality of a sawing section, and the cutting deviation failure is easily caused by the overlarge turtle back, so the bimetallic band saw blade has strict requirements on the turtle back. The tooth separation precision is also an important size factor, too large tolerance of the tooth separation not only easily causes deviation cutting, but also easily causes the problems of rough cutting surface, saw breakage and the like, and greatly reduces the service life of the band saw blade.
The saw teeth of the bimetal band saw blade are made of high alloy steel, usually high-speed steel, and the back of the bimetal band saw blade is made of high-strength steel, usually high-strength spring steel, and are formed by combining a high-speed steel wire and a spring steel strip through laser welding or electron beam welding and then performing processes such as gear milling, gear division, heat treatment and the like. For example, patent publication No. CN106695268A discloses a processing technology of a bimetal band saw, which includes laser welding a saw back material and a saw tooth material, then performing bright annealing treatment, performing flattening treatment by using a two-roll mill welding seam, leveling and straightening, repeatedly extruding, obtaining a coil band after fixed length and material preparation, then performing tooth milling, tooth material cleaning, tooth division processing, quenching treatment, deep cooling treatment, performing rolling and straightening, sand blasting, code spraying and butt welding of root bands after secondary tempering treatment, and obtaining the bimetal band saw.
After laser welding or electron beam welding, annealing treatment is usually required, and at present, the composite steel strip is coiled and then placed into an annealing furnace for integral annealing. Since the steel strip is deformed after being coiled, for example, a width direction becomes uneven, i.e., a tortoise back, but the deformation is elastic. However, after annealing, the deformation will be retained to form a permanent deformation, so that the composite steel strip usually needs to be leveled and straightened after annealing. However, at this time, the steel wire is still positioned on one side or both sides of the steel strip in a continuous state, and if the pressure for leveling and straightening is too high, the steel wire and the welding seam are easily cracked, as shown in fig. 1. In order to ensure that the steel wire and the welding seam are not cracked after leveling and straightening, the pressure for leveling and straightening needs to be strictly controlled, but the formed turtle back cannot be completely eliminated, or although the turtle back can be eliminated, the internal stress of the composite steel strip cannot be eliminated. If the internal stress is kept to the quenching process, the internal stress is released after quenching, so that the deformation of the tortoise back is easily formed again. This is one of the main causes of the formation of the tortoise back. The internal stress can be effectively reduced by increasing the pressure of leveling and straightening, but as mentioned above, the steel wires and welding seams of the composite steel strip are easy to crack.
The bimetal composite steel strip is a composite steel strip formed by combining a high-speed steel wire and a spring steel strip through laser welding or electron beam welding, wherein the high-speed steel wire is distributed on one side of the spring steel strip, and the other side of the steel strip is a steel strip body without the high-speed steel wire. Thus, the stress state will be different on both sides of the steel strip. In order to ensure the machining precision during gear milling, the bimetal composite steel band is generally in a straight line shape before gear milling, and the steel wire side of the composite steel band needs to be machined into a sawtooth shape when the bimetal composite steel band is machined into the bimetal band saw blade, so that the stress on the steel wire side is released, and as a result, the cutter bend of the bimetal band saw blade after gear milling is changed, and the cutter bend is overlarge. The bimetal band saw blade needs to be divided into groups of teeth after the teeth are milled, if the band saw blade is bent too much, the clamping heights of all the sawteeth in one group of teeth are different, and the result is that the tooth dividing amount and the tooth dividing angle of all the sawteeth in one group of teeth are different, so that the tooth dividing amount tolerance is too large.
When the bimetal composite steel belt is milled, a milling cutter moves in a single direction, so that a machined burr is easily formed on one side of a bimetal strip saw blade after tooth milling (the reason of the burr is described in detail in the document of "features of burr formation in bandsaw tooth after machining by side milling operation"), particularly, the burr is easily remained on one side of a tooth tip, and the position is the position contacted by an ejector pin when a tooth dividing head of the bimetal strip saw blade is hit or measured, so that the residual burr at the tooth tip position can influence the precision of the tooth dividing quantity when the tooth is divided. Especially, the single-sided burr causes the problem of asymmetrical tooth division amount. Fig. 2 shows the side burrs after milling.
Disclosure of Invention
The invention aims to solve the technical problem that the defects in the prior art are overcome, and the band saw blade and the manufacturing method thereof are provided, so that the turtle back and S-bend deformation after quenching are well controlled, the tooth dividing precision and the symmetry degree are improved, and the quality and the yield of the band saw blade are improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method of manufacturing a band saw blade, comprising the steps of: leveling and straightening the double-metal band saw blade after the teeth are milled, dividing the teeth, quenching, tempering and performing surface treatment in sequence, and further processing the double-metal band saw blade into the double-metal band saw blade;
in the process of leveling and straightening the bimetal band saw blade, the surface temperature of the bimetal band saw blade rises, and the surface temperature of the bimetal band saw blade rises by 25-50 ℃ after leveling and straightening.
Because the stress at the side of the steel wire is released when the teeth are milled, the cutter bend of the bimetal band saw blade is changed after the teeth are milled, so that the cutter bend is overlarge, in order to ensure the tooth dividing precision, a leveling and straightening procedure needs to be added between the milled teeth and the tooth dividing, but the problem of improving the tooth dividing precision and the problem of turtle back cannot be solved only by adding the leveling and straightening procedure between the milled teeth and the tooth dividing. The invention not only adds a leveling and straightening procedure between the milling and the tooth dividing, but also develops leveling and straightening technological parameters suitable for manufacturing band saw blades. The cutter bend is used as a main control parameter for common leveling and straightening, and the rising of the surface temperature of the bimetal band saw blade after leveling and straightening is used as a control parameter, so that the tooth dividing precision can be improved, and the turtle back problem can be effectively improved.
Wherein the surface temperature rise of the bimetal band saw blade after leveling and straightening is 25-50 ℃ (the surface temperature after leveling and straightening of the bimetal band saw blade) - (the surface temperature before leveling and straightening of the bimetal band saw blade) is 25-50 ℃.
Furthermore, the surface temperature of the bimetal band saw blade rises by more than 35-50 ℃ after being leveled and straightened.
Furthermore, the leveling and straightening device is a leveling roller, the outlet gap of the leveling roller is consistent with the thickness of the band saw blade, and the inlet gap of the leveling roller is smaller than the outlet gap. The outlet gap is consistent with the thickness of the band saw blade, so that the band saw blade does not bear pressure at the outlet end of the leveling roller. The inlet gap of the leveling roller is smaller than the outlet gap, so that the band saw blade bears larger pressure at the inlet end, and the pressure borne by the band saw blade in the process of passing through the leveling roller from the inlet to the outlet is gradually reduced to zero, so that the leveling of the strip-shaped material is realized. Meanwhile, the band saw blade bears pressure between the leveling rollers and is repeatedly bent and deformed in the leveling rollers, so that the surface temperature of the band saw blade is increased after the band saw blade passes through the deformation of the leveling rollers.
As shown in fig. 3, the entrance gap of the leveling rollers refers to the distance b between the first and second rollers of the leveling rollers, and the exit gap of the leveling rollers refers to the distance c between the last roller and the penultimate roller of the leveling rollers.
Further, the inlet gap of the leveling roller is less than 60% of the outlet gap. In actual production application, the judgment is carried out according to the temperature of the band saw blade after passing through the leveling roller, so the scheme also carries out the judgment according to the temperature. Temperature is a criterion for determining whether the gap adjustment is appropriate.
Furthermore, the bent angle of the bimetal band saw blade after being leveled and straightened is +/-0.6 mm/1000 mm. The bimetal band saw blade is kept to be slightly bent or not bent (namely, the band saw blade is in a straight line shape), so that the precision of subsequent tooth division can be effectively improved.
Further, the device that leveling alignment adopted includes guiding mechanism, leveling roller, drive wheel and the curved detection device of sword that sets gradually, and the leveling alignment process specifically includes following step: the stub bar for drawing the coiling of the bimetal band saw blade sequentially passes through the guide mechanism, the leveling roller, the driving wheel and the knife bending detection device. If the band saw blade is too bent, so that the stub bar cannot be fixed on the material receiving machine (the material receiving machine is arranged behind the knife bending detection device), the pressing amount of the left side and the right side of the leveling roller needs to be adjusted, and the bending degree of the band saw blade is within a reasonable range. At the moment, the band saw blade does not need to be ensured to be in a straight line shape, because the knife bending detection device can feed back the detection result to the leveling roller for adjustment during production.
Further, guiding mechanism includes the cushion, respectively with last gyro wheel seat, the lower gyro wheel seat that the cushion is fixed, install the gyro wheel on the last gyro wheel seat, install lower gyro wheel on the lower gyro wheel seat, the band saw blade that the level was expanded is followed go up the gyro wheel with pass through between the gyro wheel down, and by go up the gyro wheel with lower gyro wheel drive, the base of band saw blade is along the cushion side removes, and the sawtooth end orientation of band saw blade the guiding mechanism outside. The side surface of the cushion block plays a role in positioning the bottom edge of the band saw blade.
Furthermore, the plane of the upper roller and the lower roller forms an included angle a with the advancing direction of the band saw blade, and the included angle a is not more than 5 degrees. The band saw blade is forced to the direction of the cushion block, so that the band saw blade can pass through the bottom edge for positioning.
The invention also discloses a band saw blade manufactured by the manufacturing method of the band saw blade.
Compared with the prior art, the invention has the beneficial effects that:
1) the band saw blade manufactured by the invention can well reduce or even eliminate the internal stress of the band saw blade, thereby leading the deformation caused by the release of the internal stress during quenching to be very small, leading the deformation after the quenching such as tortoise back, S bend and the like to be well controlled, and greatly improving the yield of the band saw blade.
2) The band saw blade manufactured by the invention ensures that the band saw blade before tooth division keeps a linear state, so that the clamping height of each sawtooth in a group of teeth is consistent with the striking position of the tooth dividing die during tooth division, thereby greatly improving the stability of tooth division quality.
3) The band saw blade manufactured by the invention completely eliminates the side edge burrs of the band saw blade before tooth division, thereby greatly improving the tooth division precision of the tooth division process.
Drawings
FIG. 1 shows a steel wire and weld cracking caused by a conventional band saw blade manufacturing process.
FIG. 2 shows the side burrs of a milled tooth produced by a conventional band saw blade manufacturing process.
FIG. 3 is a schematic view of the leveling roller of the present invention.
Fig. 4 is a schematic structural diagram of a guide mechanism according to an embodiment of the present invention.
Fig. 5 is a top view of fig. 4.
FIG. 6 is a sawtooth photograph of an embodiment of the present invention.
Detailed Description
1) A manufacturing process route of a bimetal band saw blade comprises the following steps: leveling and straightening the double-metal band saw blade after gear milling, then performing tooth separation, cleaning, quenching, tempering and surface treatment, and further processing into the double-metal band saw blade. Namely: milling teeth, leveling and straightening, dividing teeth, cleaning, quenching, tempering and surface treatment. If necessary, winding can be carried out before the teeth are separated so as to reverse the band saw blade. The surface treatment here comprises one or two of rolling and sand blasting.
The procedures before gear milling are consistent with those in the prior art, the saw back material and the sawtooth material are subjected to laser welding, then bright annealing treatment is carried out, and the welding seam of a two-roll mill is utilized for leveling, leveling and straightening.
2) Except for leveling and straightening, other procedures in the process route can be manufactured by adopting a general machining process and a general method for the bimetal band saw blade. The specific operation method of the leveling and straightening process comprises the following steps:
a) and (4) coiling the bimetallic strip saw blade subjected to tooth milling, loading the bimetallic strip saw blade into a feeding machine, and fixing the bimetallic strip saw blade by using a check ring.
b) The stub bar for drawing the coiling of the bimetal band saw blade sequentially passes through the guide mechanism, the leveling roller, the driving wheel, the knife bend detection device and the free end and then is fixed on the material receiving machine. The bending is +/-0.6 mm/1000 mm.
At this point, care is taken to keep the band saw blade substantially linear as the stub bar is pulled through the leveling rolls. If the band saw blade is too bent, so that the stub bar cannot be fixed on the material receiving machine, the pressing amount of the left side and the right side of the leveling roller needs to be adjusted, and the bending degree of the band saw blade is within a reasonable range. At the moment, the band saw blade does not need to be ensured to be in a straight line shape, because the knife bending detection device can feed back the detection result to the leveling roller for adjustment during production.
The inlet gap and the outlet gap of the leveling roller are adjusted according to the following adjustment principle: the outlet gap is consistent with the thickness of the band saw blade, so that the band saw blade does not bear pressure at the outlet end of the leveling roller; the inlet gap is smaller than the outlet gap, so that the surface temperature of the band saw blade is raised by more than 25 ℃ after the band saw blade passes through the deformation of the leveling roller.
In actual production application, the judgment is carried out according to the temperature of the band saw blade after passing through the leveling roller, so the scheme also carries out the judgment according to the temperature. Temperature is a criterion for determining whether the gap adjustment is appropriate.
3) As shown in fig. 4-5, the guiding mechanism includes a cushion block 1, an upper roller seat 2 and a lower roller seat 3 fixed to the cushion block 1 via a bolt 8, an upper roller 4 is installed on the upper roller seat 2, a lower roller 5 is installed on the lower roller seat 3, a horizontally placed band saw blade passes through the upper roller 4 and the lower roller 5, and is driven by the upper roller 4 and the lower roller 5, a bottom edge 7 of the band saw blade 6 moves along the cushion block 1, and a sawtooth end 9 of the band saw blade 6 faces the outside of the guiding mechanism. The plane of the upper roller 4 and the plane of the lower roller 5 are perpendicular to the horizontal plane, the included angle between the plane of the upper roller 4 and the plane of the lower roller 5 and the advancing direction (arrow direction in figure 4) of the band saw blade is a, and the included angle a is not more than 5 degrees. Is characterized in that: the bottom edge of the saw blade is in contact with the cushion block, the sawtooth part is not in contact with any part, the upper roller and the lower roller form an angle which is not more than 5 degrees with the running direction of the saw blade to the maximum extent, so that the band saw blade has a force towards the direction of the cushion block, and the band saw blade can be positioned by the bottom edge.
4) The band saw blade product processed by the method is characterized in that: the width of the tortoise back is 0.5 per mill of the width of the band saw blade, the two sides of the saw teeth have no burrs, and the tooth dividing precision is within +/-0.02 mm.
Example 1
The method of the invention is adopted to level and straighten the band saw blade with the 67 x 1.6-1/1.5TPI specification after 1000m of teeth milling, the inlet clearance is 0.5mm, the outlet clearance is 1.6mm, and the inlet clearance is 31 percent of the outlet clearance. After leveling and straightening, the surface temperature is raised by 40 ℃, and the bending is 0.3mm/1000 mm. Then, the working procedures of tooth division, cleaning, quenching and tempering are carried out, the average size of the tortoise back with the saw blade after processing is 0.028mm, the maximum value is 0.05mm, and the qualification rate is 100 percent (the qualification standard is 0.07 mm). The difference between the maximum value and the minimum value of the tooth separation amount is 0.03 mm.
The bimetal band saw blade processed by the method is characterized in that the back of the turtle is less than 0.8 per mill of the width, the tooth separation amount fluctuation is less than 0.03mm, and as shown in figure 6, the saw teeth have no side burrs.
Comparative example 1
The processing of tooth dividing, cleaning, quenching and tempering is directly carried out on a band saw blade with the specification of 67 x 1.6-1/1.5TPI after 1000m of tooth milling, the average size of the tortoise back of the band saw blade after processing is 0.054mm, the maximum value is 0.10mm, and the qualification rate is 71% (the qualification standard is 0.07 mm). The difference between the maximum value and the minimum value of the tooth separation amount is 0.07 mm.
Comparative example 2
Leveling and straightening 67 x 1.6-1/1.5TPI band saw blades with 1000m milled teeth, wherein the inlet gap is 1.2mm, the outlet gap is 1.6mm, the inlet gap is 75% of the outlet gap, the temperature is only increased by 10 ℃ after leveling and straightening, and the cutter bend is 0.3mm/1000mm after leveling and straightening. Then the working procedures of tooth division, cleaning, quenching and tempering are carried out. After processing, the average size of the tortoise back with the saw blade is 0.048mm, the maximum value is 0.09mm, and the qualification rate is 78% (the qualification standard is 0.07 mm). The difference between the maximum value and the minimum value of the tooth separation amount is 0.03 mm.
The comparison shows that the method for processing the band saw blade can effectively improve the turtle back problem and improve the tooth dividing precision. If the temperature rise after leveling and straightening is not controlled, although the tooth dividing precision can be improved, the problem of the turtle back can not be thoroughly solved.
Claims (8)
1. A method for manufacturing a band saw blade is characterized by comprising the following steps: leveling and straightening the double-metal band saw blade after the teeth are milled, dividing the teeth, quenching, tempering and performing surface treatment in sequence, and further processing the double-metal band saw blade into the double-metal band saw blade;
in the process of leveling and straightening the bimetal band saw blade, the surface temperature of the bimetal band saw blade rises, and the surface temperature of the bimetal band saw blade rises by 25-50 ℃ after leveling and straightening.
2. The method of manufacturing a band saw blade according to claim 1, wherein the leveling and straightening device is a leveling roller, an outlet gap of the leveling roller is equal to a thickness of the band saw blade, and an inlet gap of the leveling roller is smaller than the outlet gap.
3. The method of making a band saw blade according to claim 2 wherein the leveling roll has an entrance gap that is less than 60% of the exit gap.
4. The method of manufacturing a band saw blade according to claim 2, wherein the bi-metallic band saw blade is levelled and straightened to have a bow of ± 0.6mm/1000 mm.
5. The method for manufacturing a band saw blade according to claim 2, wherein the device for leveling and straightening comprises a guide mechanism, a leveling roller, a driving wheel and a knife bend detection device which are arranged in sequence, and the leveling and straightening process comprises the following steps: the stub bar for drawing the coiling of the bimetal band saw blade sequentially passes through the guide mechanism, the leveling roller, the driving wheel and the knife bending detection device.
6. The manufacturing method of the band saw blade according to claim 5, characterized in that the guiding mechanism comprises a cushion block (1), an upper roller seat (2) and a lower roller seat (3) which are respectively fixed with the cushion block (1), an upper roller (4) is installed on the upper roller seat (2), a lower roller (5) is installed on the lower roller seat (3), the horizontally unfolded band saw blade passes through the space between the upper roller (4) and the lower roller (5) and is driven by the upper roller (4) and the lower roller (5), the bottom edge of the band saw blade moves along the side face of the cushion block (1), and the sawtooth side of the band saw blade faces the outer side of the guiding mechanism.
7. The method for manufacturing a band saw blade according to claim 6, wherein the plane of the upper roller (4) and the lower roller (5) forms an angle a with the advancing direction of the band saw blade, and the angle a does not exceed 5 °.
8. A band saw blade manufactured by the method for manufacturing a band saw blade according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110835796.2A CN113385740A (en) | 2021-07-23 | 2021-07-23 | Band saw blade manufacturing method and band saw blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110835796.2A CN113385740A (en) | 2021-07-23 | 2021-07-23 | Band saw blade manufacturing method and band saw blade |
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| CN113385740A true CN113385740A (en) | 2021-09-14 |
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| CN202110835796.2A Withdrawn CN113385740A (en) | 2021-07-23 | 2021-07-23 | Band saw blade manufacturing method and band saw blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
-
2021
- 2021-07-23 CN CN202110835796.2A patent/CN113385740A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346322A (en) * | 2021-12-08 | 2022-04-15 | 江阴金缘锯业有限公司 | Preparation process of bimetallic strip saw blade |
| CN114346322B (en) * | 2021-12-08 | 2023-07-04 | 江阴金缘锯业有限公司 | Preparation process of bimetallic band saw blade |
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Application publication date: 20210914 |
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