CN105935711B - A kind of preparation technology of Stainless Steel Coil - Google Patents
A kind of preparation technology of Stainless Steel Coil Download PDFInfo
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- CN105935711B CN105935711B CN201610536121.7A CN201610536121A CN105935711B CN 105935711 B CN105935711 B CN 105935711B CN 201610536121 A CN201610536121 A CN 201610536121A CN 105935711 B CN105935711 B CN 105935711B
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- pipe
- tubule
- stainless steel
- steel coil
- drawn
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Classifications
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- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
- B21D11/07—Making serpentine-shaped articles by bending essentially in one plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
Abstract
A kind of preparation technology of Stainless Steel Coil, the technique for including tubulation, use steel billet to carry out on-line continuous for the pipe of raw material and produce tubulation, tubule is made；The technique of bend pipe, the tubule after tubulation is sent to bending machine, bend pipe is carried out to tubule, bend pipe is made；The technique of cutting, bend pipe are finished after scale, the technique for cutting off tube head clout, Stainless Steel Coil are made；After tubulation step, before bend pipe step, in addition to the technique of hard ball is inserted, sealed in one plug rubber stopper of tubule, pour into small hard ball from the other end of tubule, after filling hard ball jolt ramming, close tubule opening.Stainless Steel Coil bending section pipe inner section prepared by present invention process is indeformable, and pipe inner section size is consistent, and uniformly, current, air-flow are uniform during commercial Application, will not produce bubble, tube wall is thin, good heat dissipation effect.
Description
Technical field
The present invention relates to a kind of preparation technology of stainless-steel pipe, the preparation work of specifically a kind of Stainless Steel Coil
Skill.
Background technology
Stainless Steel Coil is the bend pipe of a kind of plate-like or mosquito-repellent incense shape, machinery, electronics, electric power, should be spun in chemical industry extensively
Knit, rubber, food, medical equipment, aviation, space flight, communicate, the industrial circle such as oil.At present, when system is by Stainless Steel Coil,
The tubule obtained after the technique of tubulation is generally directly sent to bending machine and carries out bend pipe, it is curved when bending machine carries out bend pipe to tubule
Pars convoluta deforms, and can become flat, can cause water so as to cause coil pipe pipe inner section size to differ, during industrial application
Stream, air-flow are uneven, and current can also produce bubble when cooling, and influence to use.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of preparation technology of Stainless Steel Coil, includes the work of tubulation
Skill, use steel billet to carry out on-line continuous for the pipe of raw material and produce tubulation, tubule is made；The technique of bend pipe, will be thin after tubulation
Pipe is sent to bending machine, carries out bend pipe to tubule, bend pipe is made；The technique of cutting, bend pipe are finished after scale, are cut off more than tube head
The technique of material, Stainless Steel Coil is made；After tubulation step, before bend pipe step, in addition to the technique of hard ball is inserted, in tubule
One plug rubber stopper is sealed, and small hard ball is poured into from the other end of tubule, and after filling hard ball jolt ramming, closing tubule is opened
Mouthful；After the cutting step, the step of in addition to pouring out hard ball, shakes to Stainless Steel Coil, pours out hard ball；It is being made
After Stainless Steel Coil, in addition to the step of pickling is surface-treated to Stainless Steel Coil is carried out to Stainless Steel Coil.
The hard ball is steel ball, iron ball or glass marble, and a diameter of below 2mm, hard bulb diameter is the smaller the better, with hard
The diameter 1mm of ball or so best results, hard ball are optimal with iron ball.
The pipe is 304 stainless steels, and pipe a diameter of 19.95mm-20.05mm, a diameter of 20mm of pipe is optimal.
Due to before bent tube technique, hard ball is being expired built in tubule, in bend pipe, bending section internally small hard ball
Under effect, ensure that the internal diameter of bending section will not change, and will not become flat so that Stainless Steel Coil pipe interior diameter is equal
Even, area of section is in the same size, improves the quality of Stainless Steel Coil.On the one hand it be can guarantee that using hard ball in elbow curvature portion
Footpath will not deform, and on the other hand, after Stainless Steel Coil is made, pours out hard ball and be convenient to.
At present, the technique for preparing Stainless Steel Coil is difficult that a diameter of 20mm steel billet is made into pipe thickness is 1mm or 1mm
Following tubule, therefore, the stainless pipe coil pipe of in the market are made with being bent after more tubules welding mostly, can not still use one
Stainless Steel Coil is made in tubule, and welding position often easily ftractures, and causes Stainless Steel Coil to be scrapped in industrial application, and
And pipe thickness is thicker, the heat dispersion of Stainless Steel Coil is poorer.The technique of tubulation of the present invention employs this enterprise and touched for many years
Unique experience that rope comes out, enabling the tubule that pipe thickness is 1mm or below 1mm is made in a diameter of 20mm steel billet,
It is not broken, Stainless Steel Coil is prepared without the mode of welding, it comprises the following steps：
The first step：The step of pickling, pickling is carried out to pipe, removes the oxide adhered on pipe surface；
Second step：The step of reconditioning, reconditioning is carried out to pipe, except deburring and impurity；
3rd step：The step of tack, tack is carried out to pipe two, automatic production line exists during ensureing large-scale production
Pipe afterwards is kept point-blank with preceding pipe；
4th step：The step of heating, pipe is heated using natural gas, is heated to 1048-1052 degrees Celsius；
5th step：The step of rolling, pipe is rolled, to destroy the cast sturcture of pipe steel ingot, refine steel
Crystal grain, and the defects of eliminate microscopic structure, so that steel tissue is closely knit, mechanical property is improved；
6th step：The step of annealing；The step of annealing is that steel pipe passes through temperature with the speed of every 20 minutes 10-15 rice
The normal-temperature water spent between 0 degree of -25 degree, rapid cooling is carried out to the pipe after rolling, to keep pipe case hardness；Water is rapidly
After cooling down pipe, pipe case hardness is 1-5 Rockwell hardness；
7th step：The step of straightening, for ensureing pipe point-blank, to ensure that pipe is not bent, cold drawing steps
Middle pipe homogeneous deformation, tubulation even tube wall are not broken；
8th step：The step of pickling, to remove the oxide adhered on pipe surface again；
9th step：Upper grey step, to increase pipe surface lubricity, prepared to be cold drawn；
Tenth step：The step of taking the lead, to ensure that pipe head flushes；
11st step：Cold drawn step, cold drawn to pipe application tension, pipe can deform, as tension increases
Adding, the tension born inside pipe gradually increases, after tension caused by pipe inside exceedes the yield point that pipe has,
Stop cold drawn, shed load, first time cold-drawn steel pipe is made；
12nd step：The step of annealing；First time cold-drawn steel pipe using the speed of every 20 minutes 10-15 rice by temperature as 0
Normal-temperature water between the degree of degree -25, cools to first time cold-drawn steel pipe, to strengthen first time cold-drawn steel pipe case hardness；
13rd step：The step of straightening；Straightening is carried out to first time cold-drawn steel pipe, to ensure that first time cold-drawn steel pipe is not curved
Song, pipe homogeneous deformation in cold drawing steps, tubulation even tube wall are not broken；
14th step：The step of pickling；To remove the oxide adhered on first time cold-drawn steel pipe surface；
15th step：Upper grey step；To increase first time cold-drawn steel pipe surface lubricity, prepared to be cold drawn again；
16th step：The step of taking the lead；To ensure that pipe head flushes；
17th step：Cold drawn step；Tension is applied to first time cold-drawn steel pipe, first time cold-drawn steel pipe is stretched to
After new yield point, stopping is cold drawn, sheds load, and tubule is made；
18th step：The step of annealing；Tubule using the speed of every 20 minutes 10-15 rice by temperature as 0 degree -25 degree between
Normal-temperature water, tubule is cooled, to strengthen tubule case hardness；
19th step：The step of straightening；For ensureing tubule point-blank, to prevent in bent tube technique, bend pipe
It is uneven.
The ringlet of the technique of the bend pipe, first Stainless Steel Coil inner face, the great circle of Stainless Steel Coil is then bent again.
The pipe thickness of the tubule is 0.98mm-1.02mm, and the pipe thickness of tubule is optimal for 1mm.
The step of heating, it is heated to 1050 degrees Celsius of pipe most preferably, if it exceeds 1050 degree, blank temperature can be caused
It is too high, without moulding, easily bend through head, if temperature is less than 1050 degree, pipe it is moulding excessive, it is difficult to bend.
The upper grey step, its grey material include 85% limewash, 15% butter.
The step of pickling, acid are the mixed liquor of nitric acid, hydracid and water, are matched as 1：1：80.
Embodiment
Embodiment：A kind of preparation technology of Stainless Steel Coil, the technique for including tubulation, use pipe of the steel billet for raw material
On-line continuous production tubulation is carried out, tubule is made；The technique of bend pipe, the tubule after tubulation is sent to bending machine, tubule is carried out
Bend pipe, bend pipe is made；The technique of cutting, bend pipe are finished after scale, the technique for cutting off tube head clout, stainless steel disc are made
Pipe；After tubulation step, before bend pipe step, in addition to the technique of hard ball is inserted, is sealed in one plug rubber stopper of tubule,
Small hard ball is poured into from the other end of tubule, after filling hard ball jolt ramming, closes tubule opening；After the cutting step, also wrap
The step of pouring out hard ball is included, Stainless Steel Coil is shaken, pours out hard ball；After Stainless Steel Coil is made, also wrap
Include and the step of pickling is surface-treated to Stainless Steel Coil is carried out to Stainless Steel Coil.
The hard ball is steel ball, iron ball or glass marble, and a diameter of below 2mm, hard bulb diameter is the smaller the better, with hard
The diameter 1mm of ball or so best results, hard ball are optimal with iron ball.
The pipe is 304 stainless steels, and pipe a diameter of 19.95mm-20.05mm, a diameter of 20mm of pipe is optimal.
Due to before bent tube technique, hard ball is being expired built in tubule, in bend pipe, bending section internally small hard ball
Under effect, ensure that the internal diameter of bending section will not change, and will not become flat so that Stainless Steel Coil pipe interior diameter is equal
Even, area of section is in the same size, improves the quality of Stainless Steel Coil.On the one hand it be can guarantee that using hard ball in elbow curvature portion
Footpath will not deform, and on the other hand, after Stainless Steel Coil is made, pours out hard ball and be convenient to.
At present, the technique for preparing Stainless Steel Coil is difficult that a diameter of 20mm steel billet is made into pipe thickness is 1mm or 1mm
Following tubule, therefore, the stainless pipe coil pipe of in the market are made with being bent after more tubules welding mostly, can not still use one
Stainless Steel Coil is made in tubule, and welding position often easily ftractures, and causes Stainless Steel Coil to be scrapped in industrial application, and
And pipe thickness is thicker, the heat dispersion of Stainless Steel Coil is poorer.The technique of tubulation of the present invention employs this enterprise and touched for many years
Unique experience that rope comes out, enabling the tubule that pipe thickness is 1mm or below 1mm is made in a diameter of 20mm steel billet,
It is not broken, Stainless Steel Coil is prepared without the mode of welding, it comprises the following steps：
The first step：The step of pickling, pickling is carried out to pipe, removes the oxide adhered on pipe surface；
Second step：The step of reconditioning, reconditioning is carried out to pipe, except deburring and impurity；
3rd step：The step of tack, tack is carried out to pipe two, automatic production line exists during ensureing large-scale production
Pipe afterwards is maintained at point-blank with preceding pipe；
4th step：The step of heating, pipe is heated using natural gas, is heated to 1048-1052 degrees Celsius；
5th step：The step of rolling, pipe is rolled, to destroy the cast sturcture of pipe steel ingot, refine steel
Crystal grain, and the defects of eliminate microscopic structure, so that steel tissue is closely knit, mechanical property is improved；
6th step：The step of annealing；The step of annealing is that steel pipe passes through temperature with the speed of every 20 minutes 10-15 rice
The normal-temperature water spent between 0 degree of -25 degree, rapid cooling is carried out to the pipe after rolling, to strengthen pipe case hardness；Water is rapidly
After cooling down pipe, pipe case hardness is 1-5 Rockwell hardness；
7th step：The step of straightening, for ensureing pipe point-blank, to ensure that pipe is not bent, cold drawing steps
Middle pipe homogeneous deformation, tubulation even tube wall are not broken；
8th step：The step of pickling, to remove the oxide adhered on pipe surface again；
9th step：Upper grey step, to increase pipe surface lubricity, prepared to be cold drawn；
Tenth step：The step of taking the lead, to ensure that pipe head flushes；
11st step：Cold drawn step, cold drawn to pipe application tension, pipe can deform, as tension increases
Adding, the tension born inside pipe gradually increases, after tension caused by pipe inside exceedes the yield point that pipe has,
Stop cold drawn, shed load, first time cold-drawn steel pipe is made；
12nd step：The step of annealing；First time cold-drawn steel pipe using the speed of every 20 minutes 10-15 rice by temperature as 0
Normal-temperature water between the degree of degree -25, cools to first time cold-drawn steel pipe, to strengthen first time cold-drawn steel pipe case hardness；
13rd step：The step of straightening；Straightening is carried out to first time cold-drawn steel pipe, to ensure that first time cold-drawn steel pipe is not curved
Song, pipe homogeneous deformation in cold drawing steps, tubulation even tube wall are not broken；
14th step：The step of pickling；To remove the oxide adhered on first time cold-drawn steel pipe surface；
15th step：Upper grey step；To increase first time cold-drawn steel pipe surface lubricity, prepared to be cold drawn again；
16th step：The step of taking the lead；To ensure that pipe head flushes；
17th step：Cold drawn step；Tension is applied to first time cold-drawn steel pipe, first time cold-drawn steel pipe is stretched to
After new yield point, stopping is cold drawn, sheds load, and tubule is made；
18th step：The step of annealing；Tubule using the speed of every 20 minutes 10-15 rice by temperature as 0 degree -25 degree between
Normal-temperature water, tubule is cooled, to strengthen tubule case hardness；
19th step：The step of straightening；For ensureing tubule point-blank, to prevent in bent tube technique, bend pipe
It is uneven.
The ringlet of the technique of the bend pipe, first Stainless Steel Coil inner face, the great circle of Stainless Steel Coil is then bent again.
The pipe thickness of the tubule is 0.98mm-1.02mm, and the pipe thickness of tubule is optimal for 1mm.
The step of heating, it is heated to 1050 degrees Celsius of pipe most preferably, if it exceeds 1050 degree, blank temperature can be caused
It is too high, without moulding, easily bend through head, if temperature is less than 1050 degree, pipe it is moulding excessive, it is difficult to bend.
The upper grey step, its grey material include 85% limewash, 15% butter.
The step of pickling, acid are the mixed liquor of nitric acid, hydracid and water, are matched as 1：1：80.
Claims (9)
- A kind of 1. preparation technology of Stainless Steel Coil, it is characterised in that：Technique including tubulation, use steel billet to carry out on-line continuous for the pipe of raw material and produce tubulation, tubule is made；The technique of bend pipe, the tubule after tubulation is sent to bending machine, bend pipe is carried out to tubule, bend pipe is made；The technique of cutting, bend pipe are finished after scale, the technique for cutting off tube head clout, Stainless Steel Coil are made；After tubulation step, before bend pipe step, in addition to the technique of hard ball is inserted, sealed in one plug rubber stopper of tubule Mouthful, small hard ball is poured into from the other end of tubule, after filling hard ball jolt ramming, closes tubule opening；After the cutting step, the step of in addition to pouring out hard ball, shakes to Stainless Steel Coil, pours out hard ball；After Stainless Steel Coil is made, in addition to the step that pickling is surface-treated to Stainless Steel Coil is carried out to Stainless Steel Coil Suddenly；The technique of the tubulation comprises the following steps：The first step：The step of pickling, pickling is carried out to pipe, removes the oxide adhered on pipe surface；Second step：The step of reconditioning, reconditioning is carried out to pipe, except deburring and impurity；3rd step：The step of tack, tack is carried out to pipe two, automatic production line is posterior during ensureing large-scale production Pipe is kept point-blank with preceding pipe；4th step：The step of heating, pipe is heated using natural gas, is heated to 1048-1052 degrees Celsius；5th step：The step of rolling, pipe is rolled, to destroy the cast sturcture of pipe, refine the crystal grain of pipe, and disappear The defects of except microscopic structure, so that pipe tissue is closely knit, mechanical property is improved；6th step：The step of annealing；The step of annealing is, pipe using the speed of every 20 minutes 10-15 rice by temperature as 0 Normal-temperature water between the degree of degree -25, rapid cooling is carried out to the pipe after rolling, to strengthen pipe case hardness；7th step：The step of straightening, for ensureing pipe point-blank, to ensure that pipe is not bent, cold drawing steps middle pipe Base homogeneous deformation, tubulation even tube wall are not broken；8th step：The step of pickling, to remove the oxide adhered on pipe surface again；9th step：Upper grey step, to increase pipe surface lubricity, prepared to be cold drawn；Tenth step：The step of taking the lead, to ensure that pipe head flushes；11st step：Cold drawn step, cold drawn to pipe application tension, pipe can deform, as tension increases, pipe The tension born inside base gradually increases, and after tension caused by pipe inside exceedes the yield point that pipe has, stops It is cold drawn, load is shed, first time cold-drawn steel pipe is made；12nd step：The step of annealing；First time cold-drawn steel pipe using the speed of every 20 minutes 10-15 rice by temperature as 0 degree -25 Normal-temperature water between degree, first time cold-drawn steel pipe is cooled, to strengthen first time cold-drawn steel pipe case hardness；13rd step：The step of straightening；Straightening is carried out to first time cold-drawn steel pipe, to ensure that first time cold-drawn steel pipe is not bent, Pipe homogeneous deformation in cold drawing steps, tubulation even tube wall are not broken；14th step：The step of pickling；To remove the oxide adhered on first time cold-drawn steel pipe surface；15th step：Upper grey step；To increase first time cold-drawn steel pipe surface lubricity, prepared to be cold drawn again；16th step：The step of taking the lead；To ensure that first time cold-drawn steel pipe head flushes；17th step：Cold drawn step；Tension is applied to first time cold-drawn steel pipe, first time cold-drawn steel pipe is stretched to new After yield point, stopping is cold drawn, sheds load, and tubule is made；18th step：The step of annealing；Tubule is normal between 0 degree of -25 degree by temperature using the speed of every 20 minutes 10-15 rice Warm water, tubule is cooled, to strengthen tubule case hardness；19th step：The step of straightening；For ensureing tubule point-blank, to prevent in bent tube technique, bend pipe is uneven It is even.
- 2. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The hard ball is steel ball, iron Ball or glass marble, a diameter of below 2mm.
- 3. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The technique of the bend pipe, first The ringlet of Stainless Steel Coil inner face is bent, then bends the great circle of Stainless Steel Coil again.
- 4. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The pipe is 304 stainless steels, The a diameter of 19.95mm-20.05mm of pipe.
- 5. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The pipe thickness of the tubule is 0.98mm-1.02mm。
- 6. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The step of heating, heating To 1050 degrees Celsius of pipe.
- 7. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The upper grey step, its ash Material include 85% limewash, 15% butter.
- 8. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The step of pickling, acid are The mixed liquor of nitric acid, hydracid and water, match as 1：1：80.
- 9. the preparation technology of Stainless Steel Coil according to claim 1, it is characterised in that：The step of annealing, water are anxious For quickly cooling but after pipe, pipe case hardness is 1-5 Rockwell hardness.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107520274A (en) * | 2017-04-21 | 2017-12-29 | 苏州贝思特金属制品有限公司 | A kind of preparation method of ferrite 436L seamless stainless steels seamless steel pipe coil pipe |
| CN107520583A (en) * | 2017-04-21 | 2017-12-29 | 苏州贝思特金属制品有限公司 | A kind of manufacture method of ferrite 439L stainless-steel seamless pipe coil pipes |
| CN107413881A (en) * | 2017-04-21 | 2017-12-01 | 苏州贝思特金属制品有限公司 | A kind of manufacture method of the stainless-steel seamless pipe coil pipe of ferrite 444 |
| CN107377666A (en) * | 2017-04-21 | 2017-11-24 | 苏州贝思特金属制品有限公司 | A kind of manufacture method of super austenitic 904L stainless-steel seamless pipe coil pipes |
| CN107243599A (en) * | 2017-05-10 | 2017-10-13 | 杨光 | A kind of resin-coated sand shell mould, which is filled, applies casting technique without dartlike weapon side technology |
| CN109848245A (en) * | 2018-10-26 | 2019-06-07 | 邯郸新兴特种管材有限公司 | A kind of production method of integrally finned tubes |
| CN116809728B (en) * | 2023-08-30 | 2023-10-27 | 蓬莱市临阁橡塑制品有限公司 | Coiling machine |
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| CN86205562U (en) * | 1986-08-04 | 1987-10-03 | 刘复麟 | Hydraulic pipe-bender |
| CN1594953A (en) * | 2004-07-13 | 2005-03-16 | 天津市天材科技发展有限公司 | Method for making ferrite stainless steel seamless pipes and cold working process thereof |
| CN101797602A (en) * | 2010-04-15 | 2010-08-11 | Bac大连有限公司 | Production process and production line for continuous stainless steel coil |
| CN104056885A (en) * | 2013-03-22 | 2014-09-24 | 浙江炜驰机械集团有限公司 | Pipe forming device |
| CN203991747U (en) * | 2014-05-29 | 2014-12-10 | 河北宏润重工股份有限公司 | Small-bore concetrated pipe arm drawing process frock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10124866A1 (en) * | 2001-05-22 | 2002-12-05 | Peter Schuele | Tool for bending machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86205562U (en) * | 1986-08-04 | 1987-10-03 | 刘复麟 | Hydraulic pipe-bender |
| CN1594953A (en) * | 2004-07-13 | 2005-03-16 | 天津市天材科技发展有限公司 | Method for making ferrite stainless steel seamless pipes and cold working process thereof |
| CN101797602A (en) * | 2010-04-15 | 2010-08-11 | Bac大连有限公司 | Production process and production line for continuous stainless steel coil |
| CN104056885A (en) * | 2013-03-22 | 2014-09-24 | 浙江炜驰机械集团有限公司 | Pipe forming device |
| CN203991747U (en) * | 2014-05-29 | 2014-12-10 | 河北宏润重工股份有限公司 | Small-bore concetrated pipe arm drawing process frock |
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| CN105935711A (en) | 2016-09-14 |
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