CN111014412A - Spinning process of stainless steel venturi tube - Google Patents
Spinning process of stainless steel venturi tube Download PDFInfo
- Publication number
- CN111014412A CN111014412A CN201911321762.0A CN201911321762A CN111014412A CN 111014412 A CN111014412 A CN 111014412A CN 201911321762 A CN201911321762 A CN 201911321762A CN 111014412 A CN111014412 A CN 111014412A
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- China
- Prior art keywords
- spinning
- stainless steel
- tube body
- arc
- spinning process
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- 238000009987 spinning Methods 0.000 title claims abstract description 47
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 28
- 239000010935 stainless steel Substances 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims description 34
- 241001391944 Commicarpus scandens Species 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001315 Tool steel Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a spinning process of a stainless steel venturi tube, which is characterized in that a double-spinning-wheel machine tool is adopted to symmetrically spin two ends of a tube body, the tube body is preheated before spinning, and the risk of tube body breakage is reduced by releasing the stress of the tube body in advance. The invention can improve the processing efficiency of the stainless steel venturi tube, and can improve the processing precision and the product quality of the stainless steel venturi tube.
Description
Technical Field
The invention relates to a spinning process of a stainless steel venturi.
Background
The venturi in the venturi dust removal equipment is generally arranged outdoors, and in order to prevent the venturi from rusting and affecting the performance, the venturi is generally made of stainless steel materials, but the stainless steel materials have low elongation and high yield strength, so the venturi is not easy to form. At present, the production process of the stainless steel venturi tube adopts a hydraulic press for stretching, but the stainless steel venturi tube can be formed only by stretching five to six times, and annealing is needed after each procedure is finished, so that the production process of the stainless steel venturi tube is very troublesome at present, and the rejection rate is higher.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a spinning process of a stainless steel venturi tube, which adopts a double-spinning-wheel machine tool to symmetrically spin two ends of a tube body, and preheats the tube body before spinning, and reduces the risk of tube body breakage by releasing the stress of the tube body in advance.
The pipe body is made of SUS304/2B stainless steel material, and a material head of a steel coil is not used; such materials are prone to cracking because the stub bar is annealed to a lesser extent and is somewhat stronger than the intermediate material.
Preheating the pipe body material by adopting a gas stove heating mode, and covering the gas stove by the pipe body; the gas range heats evenly, and it is central temperature height moreover, and the stress of body is released to the edge by the center, can prevent effectively that the edge from being heated excessively.
The spinning wheel is made of high-speed tool steel and is quenched to more than HRC65 ℃; therefore, the spinning wheel with enough hardness is not easy to scratch, the scratched spinning wheel can pull out the scratch on the material, and the product can be cracked.
The shape of the spinning wheel is matched with the inclined plane of the small-diameter end of the tube body, and a clearance is required to be arranged so as to ensure that the working arc of the spinning wheel contacts the tube body.
The rotary wheel knife handle adopts a double-insertion I-shaped structure, so that the knife handle has high strength, is not easy to deform and can ensure the surface of a product to be smooth; if the strength of the rotary wheel knife handle is not enough, the knife can be retracted under large stress, so that the surface of the product is uneven.
During spinning, the feeding is uniform, the whole body has a great downward-falling trend, the radius of the arc of the broach is proper, and the arc is relatively straight when being too large, so that wrinkles are easy to form; when the arc is too small, the material is bent, so that the material is easy to be thinned and broken; and the material edge can not be pulled out every time, so that the frequency of the rotating wheel contacting the material edge is reduced, and the edge is prevented from being broken.
When the flange is machined to the rear end, the flange edge is required to be molded in advance, the flange edge is generally spun to the corner of the flange edge, and then the corner is cleaned, so that the flange edge is easy to break from the corner; the invention adopts a special process forming method, firstly, when the front end is processed, the die is not fast attached, and enough spinning length is reserved for the spinning flange edge at the back; secondly, the flange forming spinning route is in an arc-shaped downward falling trend, the die attaching is slow, the spinning arc is long, namely, the material is rolled down for a long distance, and if the arc is short and the stretching distance is not enough, the material is easy to break.
The invention can improve the processing efficiency of the stainless steel venturi tube, and can improve the processing precision and the product quality of the stainless steel venturi tube.
Drawings
FIG. 1 is a schematic of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the invention provides a spinning process of a stainless steel venturi tube, which adopts a double-spinning-wheel machine tool to symmetrically spin two ends of a tube body 1, and preheats the tube body 1 before spinning, and reduces the risk of cracking of the tube body 1 by releasing the stress of the tube body 1 in advance.
The pipe body 1 is made of SUS304/2B stainless steel material, and a material head of a steel coil is not used; such materials are prone to cracking because the stub bar is annealed to a lesser extent and is somewhat stronger than the intermediate material.
Preheating the pipe body 1 material by adopting a gas stove heating mode, and covering the gas stove by the pipe body 1; the gas range heats evenly, and it is central temperature height moreover, and the stress of body 1 is released to the edge by the center, can prevent effectively that the edge from being heated excessively.
The spinning wheel 2 is made of high-speed tool steel and is quenched to more than HRC65 degrees; therefore, the spinning wheel 2 with enough hardness is not easy to scratch, the scratched spinning wheel 2 can pull out the scratch on the material, and the product can be cracked.
The shape of the spinning wheel 2 is matched with the inclined plane of the small-diameter end of the tube body 1, and a clearance position is required to ensure that the working arc of the spinning wheel contacts the tube body 1.
The rotary wheel knife handle 3 adopts a double-insertion I-shaped structure, so that the knife handle 3 has high strength, is not easy to deform and can ensure the smooth surface of a product; if the strength of the rotary wheel knife handle 3 is not enough, the knife will be retracted under large stress, and the surface of the product will be uneven.
During spinning, the feeding is uniform, the whole body has a great downward-falling trend, the radius of the arc of the broach is proper, and the arc is relatively straight when being too large, so that wrinkles are easy to form; when the arc is too small, the material is bent, so that the material is easy to be thinned and broken; and the material edge can not be pulled out every time, so that the frequency of the rotating wheel contacting the material edge is reduced, and the edge is prevented from being broken.
When the flange is machined to the rear end, the flange edge is required to be molded in advance, the flange edge is generally spun to the corner of the flange edge, and then the corner is cleaned, so that the flange edge is easy to break from the corner; the invention adopts a special process forming method, firstly, when the front end is processed, the die is not fast attached, and enough spinning length is reserved for the spinning flange edge at the back; secondly, the flange forming spinning route is in an arc-shaped downward falling trend, the die attaching is slow, the spinning arc is long, namely, the material is rolled down for a long distance, and if the arc is short and the stretching distance is not enough, the material is easy to break.
The invention can improve the processing efficiency of the stainless steel venturi tube, and can improve the processing precision and the product quality of the stainless steel venturi tube.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The spinning process of the stainless steel venturi tube is characterized in that a double-spinning-wheel machine tool is adopted to symmetrically spin two ends of the tube body, the tube body is preheated before spinning, and the risk of tube body breakage is reduced by releasing the stress of the tube body in advance.
2. The spinning process of the stainless steel venturi tube according to claim 1, wherein the tube body is made of SUS304/2B stainless steel material and does not use a stub bar of a steel coil.
3. The spinning process of the stainless steel venturi tube according to claim 1, wherein a gas stove heating mode is adopted to preheat the tube body material, and the gas stove is covered by the tube body.
4. A spinning process of a stainless steel venturi according to claim 1, wherein the spinning wheel is hardened to above HRC65 degrees using high speed tool steel.
5. A spinning process of a stainless steel venturi according to claim 1, wherein the spinning wheel has a profile adapted to the inclined surface of the small diameter end of the tube body and a clearance to ensure that the working arc of the spinning wheel contacts the tube body.
6. The spinning process of the stainless steel venturi tube according to claim 1, wherein the spinning roller knife handle is of a double-insertion I-shaped structure.
7. A spinning process of a stainless steel venturi according to claim 1, characterized in that during spinning, feeding is uniform, the whole body has a great downward falling trend, the arc radius of a broach is proper, and the arc is relatively straight when being too large, so that wrinkles are easy to form; when the arc is too small, the material is bent, so that the material is easy to be thinned and broken; and the material edge can not be pulled out every time, so that the frequency of the rotating wheel contacting the material edge is reduced, and the edge is prevented from being broken.
8. A spinning process of a stainless steel venturi according to claim 1, wherein the front end is machined without the die being too fast, leaving sufficient spinning length for the spinning flange edge behind; the flange forming spinning route is in an arc-shaped downward falling trend, the die attaching speed is low, the spinning arc is long, namely, the material is rolled down for a long distance, and if the arc is short and the stretching distance is not enough, the material is easy to break.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321762.0A CN111014412A (en) | 2019-12-20 | 2019-12-20 | Spinning process of stainless steel venturi tube |
| PCT/CN2020/109167 WO2021120649A1 (en) | 2019-12-20 | 2020-08-14 | Spinning process for stainless steel venturi tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911321762.0A CN111014412A (en) | 2019-12-20 | 2019-12-20 | Spinning process of stainless steel venturi tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111014412A true CN111014412A (en) | 2020-04-17 |
Family
ID=70212307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911321762.0A Pending CN111014412A (en) | 2019-12-20 | 2019-12-20 | Spinning process of stainless steel venturi tube |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111014412A (en) |
| WO (1) | WO2021120649A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120649A1 (en) * | 2019-12-20 | 2021-06-24 | 傲垦数控装备(苏州)有限公司 | Spinning process for stainless steel venturi tube |
| CN115625245A (en) * | 2022-02-25 | 2023-01-20 | 英飞同仁风机股份有限公司 | Automatic change aluminum product venturi forming device |
Citations (4)
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| CN107552629A (en) * | 2017-10-31 | 2018-01-09 | 四川达宇特种车辆制造厂 | A kind of multistage depth cylinder depth circular cone combinatorial surface housing part spin forming method |
| CN208067054U (en) * | 2018-04-03 | 2018-11-09 | 广东博赛数控机床有限公司 | A kind of cavity liner spinning machine |
| CN209491226U (en) * | 2019-01-23 | 2019-10-15 | 西安深瞳智控技术有限公司 | A kind of head-shield rotary pressing moulding device of target seeker |
| CN209577833U (en) * | 2018-12-26 | 2019-11-05 | 金堆城钼业股份有限公司 | A kind of molybdenum crucible two-wheel mistake is away from hot shear spinning forming device |
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| GB1401558A (en) * | 1972-03-27 | 1975-07-16 | Spinnerhawk Co | Apparatus for turning pipes or the like for example for screwing them together or unscrewing them |
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| CN104259289B (en) * | 2014-09-12 | 2016-08-24 | 中材科技（苏州）有限公司 | Steel pipe preheating device and application thereof and a kind of forming method of steel pipe |
| CN105081168A (en) * | 2015-09-01 | 2015-11-25 | 无锡贺邦金属制品有限公司 | Machining method of thin-wall metal pipe |
| CN109909438A (en) * | 2017-12-12 | 2019-06-21 | 绍兴美衡德金属制品有限公司 | A kind of processing method of thin metallic tubd |
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| CN111014412A (en) * | 2019-12-20 | 2020-04-17 | 傲垦数控装备(苏州)有限公司 | Spinning process of stainless steel venturi tube |
-
2019
- 2019-12-20 CN CN201911321762.0A patent/CN111014412A/en active Pending
-
2020
- 2020-08-14 WO PCT/CN2020/109167 patent/WO2021120649A1/en active Application Filing
Patent Citations (4)
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| CN107552629A (en) * | 2017-10-31 | 2018-01-09 | 四川达宇特种车辆制造厂 | A kind of multistage depth cylinder depth circular cone combinatorial surface housing part spin forming method |
| CN208067054U (en) * | 2018-04-03 | 2018-11-09 | 广东博赛数控机床有限公司 | A kind of cavity liner spinning machine |
| CN209577833U (en) * | 2018-12-26 | 2019-11-05 | 金堆城钼业股份有限公司 | A kind of molybdenum crucible two-wheel mistake is away from hot shear spinning forming device |
| CN209491226U (en) * | 2019-01-23 | 2019-10-15 | 西安深瞳智控技术有限公司 | A kind of head-shield rotary pressing moulding device of target seeker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120649A1 (en) * | 2019-12-20 | 2021-06-24 | 傲垦数控装备(苏州)有限公司 | Spinning process for stainless steel venturi tube |
| CN115625245A (en) * | 2022-02-25 | 2023-01-20 | 英飞同仁风机股份有限公司 | Automatic change aluminum product venturi forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021120649A1 (en) | 2021-06-24 |
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Application publication date: 20200417 |