CN109647924A - Pretreating process before a kind of steel wire drawing of circular cross-section - Google Patents
Pretreating process before a kind of steel wire drawing of circular cross-section Download PDFInfo
- Publication number
- CN109647924A CN109647924A CN201811467848.XA CN201811467848A CN109647924A CN 109647924 A CN109647924 A CN 109647924A CN 201811467848 A CN201811467848 A CN 201811467848A CN 109647924 A CN109647924 A CN 109647924A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- wire
- wire drawing
- wire rod
- circular cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
- B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
- B21C43/04—Devices for de-scaling wire or like flexible work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
Abstract
The present invention proposes pretreating process before the steel wire drawing of circular cross-section a kind of, it the steps include: wire rod unwrapping wire, wire rod carries out mechanical descaling by mechanical descaling machine, and the wire rod after mechanical descaling is derusted by belt sanding device, will carry out hot water wash by the wire rod of belt sanding, applies boron；Heated-air drying will be carried out by the wire rod for applying boron；And the wire rod after drying is entered into wire drawing machine after powdered lubricant is smeared and carries out take-up after wire drawing and wire drawing.Compared with pretreating process before existing steel wire drawing, technique of the invention is using belt sanding derusting process instead of the high pressure water flushing before implementation, cathodic pickling, washing series-connection three process, and process flow is obviously shortened, and effect is more obvious；The dosage of sulfuric acid, electric energy, water has been saved, and has reduced cost of labor and spent acid, the processing cost of exhaust gas and corresponding equipment investment and maintenance cost that solution is safeguarded；In addition, significantly improving steel wire surface quality and steel wire production capacity.
Description
Technical field
The present invention relates to steel cord production technical field, in particular to a kind of section for producing steel cord is circular
Steel wire drawing front surface pretreating process.
Background technique
Under the market competitive pressure, cost efficiency is the requisite measure of each enterprise seeking development in the market, limited money
The saving use in source is brought into schedule by manufacturing industry.Therefore, as the steel cord of tyre framework material, steel bead wire and other metals
Product enterprise constantly receives the challenge of performance, cost and energy conservation, increasingly payes attention to energy-saving and emission-reduction all over the world in addition, high
The development of performance low energy consumption tire is getting faster, and requirement and relevant industries of the tire to all-steel cord and steel bead wire are to metal
The requirement of product is higher and higher.Therefore production low cost, low energy consumption, the product that blowdown is few, low in the pollution of the environment are following each rows
The trend of industry development.
The drawing of steel wire is present in the every field of wire production, at present radial framework material wire for steel cord of tyre
One or many drawings that silk, steel bead wire pass through raw material wire rod obtain desired line footpath steel wire；Raw material wire rod surface
There are a large amount of hard phosphorus shape epidermis and floating rust, for the smooth drawing for guaranteeing steel wire, wire rod needs pair before entering drawbench drawing
Steel wire surface is handled, and most of wire rod surface treatment be unable to do without acid cleaning process.
Existing conventional raw materials wire rod line footpath is between 5.0mm~7.0mm, wire rod is used before drawing at present conventional table
Face pretreating process is to first pass through high pressure water flushing after wire rod mechanical descaling, then carries out cathodic pickling, then carry out at least three
Road washing series-connection process；To guarantee that cathodic pickling is solution-stabilized, there need to be special messenger to safeguard solution daily；To guarantee each process
Groove body solution not cross contamination, washing must open for a long time before and after cathodic pickling when production, and keep certain spillway discharge；It is useless
The processing of gas, spent acid need to build special processing system, and have special messenger to handle exhaust gas, spent acid addition drug daily；One
Denier processing equipment failure problem, production scene often have some exhaust gas and overflow, affect greatly, lead to site environment
It causes field device to accelerate corrosion, while the health of Field Force is caused centainly to injure.
Generally speaking, conventional surface pretreating process has the following disadvantages: before existing steel wire drawing
One, existing cathodic pickling power consumption, consumption acid, while the stabilization to guarantee pickling concentration, need to have special messenger to tie solution daily
It is added maintenance, Production for Steel Wire higher cost；
Two, steel wire surface has a large amount of residual acids after cathodic pickling, to prevent cross contamination between groove body, needs a large amount of water to steel wire table
Face is rinsed, and increases production cost；
Three, the processing of exhaust gas, spent acid needs to build special processing system, while putting into larger process cost, brings to enterprise
Larger burden；
Four, cathodic pickling technology waste gas is dealt with improperly or equipment fault affects greatly site environment, leads to field device
Accelerate corrosion, while the health of Field Force is caused compared with major injury；
Five, treated that steel wire surface is very smooth for cathodic pickling, and band powdered lubricant amount deficiency easily leads to steel wire drawing when subsequent drawing
It pulls out unsmooth, influences the yield rate of wire drawing, waste material is more to cause production cost to rise.
Summary of the invention
For the problems of the prior art, the object of the present invention is to provide pre-process work before a kind of improved steel wire drawing
Skill can reduce Production for Steel Wire cost, energy-saving, improve steel wire surface quality, promote production capacity；Keep the scene intact environment, reduces
Labor intensity guarantees the physical and mental health of employee.
To achieve the object of the present invention, pretreating process includes as follows before a kind of steel wire drawing of circular cross-section of the invention
Step:
S1: wire rod is passed through random wire loop by wire rod unwrapping wire, and random wire loop connects and controls Snarl swi tch；The Snarl swi tch because
Entire production line parking is controlled when wire rod winding or abnormal other reasons unwrapping wire；
S2: wire rod is subjected to mechanical descaling by mechanical descaling machine, the oxide skin of bulk is crushed, mechanical bend is anti-dandruff；
S3: the wire rod after mechanical descaling is derusted by belt sanding device, the belt sanding device passes through rotation
Machine drives abrasive band to carry out grinding process to steel wire surface；
S4: hot water wash will be carried out by the wire rod of belt sanding, applies boron；
S5: heated-air drying will be carried out by the wire rod for applying boron；And
S6: the wire rod after dry enters wire drawing machine after powdered lubricant is smeared and carries out take-up after wire drawing and wire drawing.
Preferably, the diameter of the steel wire wire rod is 5.00mm-7.00mm；Steel wire carbon content be 0.60wt% ~
0.95wt%。
Further preferably, the grains of sand mesh number in the abrasive band is 60 ~ 120 mesh.
Further preferably, the grains of sand mesh number in the abrasive band is 70 ~ 85 mesh.
Further preferably, in step s3, the abrasive band rotation speed and steel wire pass through the linear speed ratio of belt sanding device
Coefficient are as follows: 0.1 ~ 1.0.
Further preferably, in step s3, the abrasive band rotation speed and steel wire pass through the linear speed ratio of belt sanding device
Coefficient are as follows: 0.6 ~ 1.0.
Further preferably, in step s3, the linear speed range that the steel wire passes through belt sanding device is 0.1m/s ~ 5m/s.
Further preferably, in step s3, the linear speed range that the steel wire passes through belt sanding device is 1.2m/s ~ 4.0m/
s。
Compared with pretreating process before existing steel wire drawing, pretreating process uses abrasive band before steel wire drawing of the invention
Derusting process polish instead of the high pressure water flushing before implementation, cathodic pickling, washing series-connection three process, process flow is obviously contracted
Short, effect is more obvious；Saved the dosage of sulfuric acid, electric energy, water, and reduce solution maintenance cost of labor and spent acid,
The processing cost of exhaust gas and corresponding equipment investment and maintenance cost；In addition, treated in abrasive band steel wire surface roughness compared with
It increases before implementation, band powdered lubricant amount is more obvious when steel wire drawing, and drawing is obviously improved compared with fruit, reduces steel wire drawing light
Fil-Lumiere, the generation for drawing the rejected products such as trace silk, improve steel wire surface quality and steel wire production capacity.
Specific embodiment
Details are as follows for the process step of the invention and advantage in conjunction with specific embodiments.
Pretreating process before a kind of steel wire drawing of circular cross-section according to the present invention comprising following steps:
S1: wire rod is passed through random wire loop by wire rod unwrapping wire, and random wire loop connects and controls Snarl swi tch；The Snarl swi tch because
Entire production line parking is controlled when wire rod winding or abnormal other reasons unwrapping wire；
S2: wire rod is subjected to mechanical descaling by mechanical descaling machine, the oxide skin of bulk is crushed, mechanical bend is anti-dandruff；
S3: the wire rod after mechanical descaling is derusted by belt sanding device, the belt sanding device passes through rotation
Machine drives abrasive band to carry out grinding process to steel wire surface；
S4: hot water wash will be carried out by the wire rod of belt sanding, applies boron；
S5: heated-air drying will be carried out by the wire rod for applying boron；And
S6: the wire rod after dry enters wire drawing machine after powdered lubricant is smeared and carries out take-up after wire drawing and wire drawing.
In the above-described embodiment, abrasive band is driven to carry out grinding process, the abrasive band to steel wire surface by whirler
Grains of sand mesh number with steel wire line footpath be according to determine, the steel wire surface quality is by adjusting abrasive band rotation speed and steel wire linear speed
Proportionality coefficient and abrasive band mesh number be finally reached ideal steel wire surface quality.
In a preferred embodiment, the diameter of the steel wire wire rod of the circular cross-section is 5.00-7.00mm；Steel wire
Carbon content is 0.60wt% ~ 0.95wt%.
In another preferred embodiment, the grains of sand mesh number in the abrasive band is 60 ~ 120 mesh；It is furthermore preferred that the sand
The grains of sand mesh number of band is 70 ~ 85 mesh.
In a preferred embodiment, the abrasive band rotation speed and steel wire pass through the linear speed ratio of belt sanding device
Coefficient are as follows: 0.1 ~ 1.0；It is furthermore preferred that the abrasive band rotation speed and steel wire pass through the linear speed proportionality coefficient of belt sanding device
Are as follows: 0.6 ~ 1.0.
In a preferred embodiment, the linear speed range that the steel wire passes through belt sanding device is 0.1m/s ~ 5m/s；
In preferred embodiment, the linear speed range that the steel wire passes through belt sanding device is 1.2m/s ~ 4.0m/s.
Compared with pretreating process before existing steel wire drawing, technique of the invention is replaced using belt sanding derusting process
High pressure water flushing, cathodic pickling, washing series-connection three process before implementing, process flow are obviously shortened, and effect is more obvious.
Pretreating process before the steel wire drawing of circular cross-section of the invention eliminates water before and after cathodic pickling and cathodic pickling
Developing technique, has not only saved the dosage of sulfuric acid, electric energy, water, but also reduces the cost of labor and spent acid, exhaust gas of solution maintenance
Processing cost, reach reduce Production for Steel Wire cost, energy-saving effect；It is synchronous to cancel after eliminating cathodic pickling technique
Spent acid, the emission-control equipment at scene, cleaned in situ space of becoming clear increase, and less there is acid dip pickle, spent acid, exhaust-gas treatment
Spent acid caused by plant failure, exhaust gas leakage problem, to be effectively protected site environment；In addition, treated in abrasive band steel wire
Surface roughness increases before relatively implementing, and band powdered lubricant amount is more obvious when steel wire drawing, and drawing is obviously improved compared with fruit, reduces
Steel wire drawing illumi yarn, the generation for drawing the rejected products such as trace silk, improve steel wire surface quality and steel wire production capacity；Of the invention
After process implementing, reduce the amount of labour used of personnel, the promotion of product quality reduces personnel to equipment, the profit for generating rejected product
The maintenance cost of smoothers and time, it is physically and mentally healthy to improve employee to reduce labor intensity.
The present invention is not limited to the described embodiments, and those skilled in the art is not departing from spirit of the invention i.e. public affairs
Open in range, still may make some modifications or changes, thus the range that is limited with claims of the scope of the present invention as
It is quasi-.
Claims (8)
1. pretreating process before a kind of steel wire drawing of circular cross-section, which is characterized in that the technique includes the following steps:
S1: wire rod is passed through random wire loop by wire rod unwrapping wire, and random wire loop connects and controls Snarl swi tch；The Snarl swi tch because
Entire production line parking is controlled when wire rod winding or abnormal other reasons unwrapping wire；
S2: wire rod is subjected to mechanical descaling by mechanical descaling machine, the oxide skin of bulk is crushed, mechanical bend is anti-dandruff；
S3: the wire rod after mechanical descaling is derusted by belt sanding device, the belt sanding device passes through rotation
Machine drives abrasive band to carry out grinding process to steel wire surface；
S4: hot water wash will be carried out by the wire rod of belt sanding, applies boron；
S5: heated-air drying will be carried out by the wire rod for applying boron；And
S6: the wire rod after dry enters wire drawing machine after powdered lubricant is smeared and carries out take-up after wire drawing and wire drawing.
2. pretreating process before a kind of steel wire drawing of circular cross-section as described in claim 1, which is characterized in that the steel
The diameter of wire rod is 5.00mm-7.00mm；Steel wire carbon content is 0.60wt% ~ 0.95wt%.
3. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 1 or 2, which is characterized in that described
Abrasive band grains of sand mesh number be 60 ~ 120 mesh.
4. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 3, which is characterized in that the sand
The grains of sand mesh number of band is 70 ~ 85 mesh.
5. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 3, which is characterized in that in step S3
In, the abrasive band rotation speed passes through the linear speed proportionality coefficient of belt sanding device with steel wire are as follows: 0.1 ~ 1.0.
6. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 5, which is characterized in that the abrasive band
Rotation speed and steel wire pass through the linear speed proportionality coefficient of belt sanding device are as follows: 0.6 ~ 1.0.
7. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 3, which is characterized in that in step S3
In, the linear speed range that the steel wire passes through belt sanding device is 0.1m/s ~ 5m/s.
8. pretreating process before a kind of steel wire drawing of circular cross-section as claimed in claim 7, which is characterized in that in step S3
In, the linear speed range that the steel wire passes through belt sanding device is 1.2m/s ~ 4.0m/s.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467848.XA CN109647924A (en) | 2018-12-03 | 2018-12-03 | Pretreating process before a kind of steel wire drawing of circular cross-section |
| PCT/CN2018/120161 WO2020113609A1 (en) | 2018-12-03 | 2018-12-10 | Circular cross-section steel wire pre-drawing pre-treatment processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467848.XA CN109647924A (en) | 2018-12-03 | 2018-12-03 | Pretreating process before a kind of steel wire drawing of circular cross-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109647924A true CN109647924A (en) | 2019-04-19 |
Family
ID=66112600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811467848.XA Pending CN109647924A (en) | 2018-12-03 | 2018-12-03 | Pretreating process before a kind of steel wire drawing of circular cross-section |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109647924A (en) |
| WO (1) | WO2020113609A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202022A (en) * | 2019-05-15 | 2019-09-06 | 安徽环新集团有限公司 | Wire stripping pre-treatment production line and method for piston ring |
| CN110238236A (en) * | 2019-06-11 | 2019-09-17 | 安徽环新集团有限公司 | Shaped wire drawing production line and production method for piston ring |
| CN111589893A (en) * | 2020-04-16 | 2020-08-28 | 江苏兴达钢帘线股份有限公司 | Steel wire for reinforcing rubber hose and production process thereof |
| CN111842529A (en) * | 2020-06-17 | 2020-10-30 | 江苏兴达钢帘线股份有限公司 | Production process for improving binding force between steel wire and rubber |
| CN112643501A (en) * | 2019-10-12 | 2021-04-13 | 丹阳亿鑫合金有限公司 | Method for removing oxide layer on surface of nickel-chromium alloy |
| CN114130849A (en) * | 2021-11-05 | 2022-03-04 | 河钢股份有限公司 | Production method of invar wire with high surface quality |
| EP4023354A4 (en) * | 2019-11-19 | 2022-10-19 | Jiangsu Zhongtian Technology Co., Ltd. | Preparation method for coated alloy wire |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826401A (en) * | 2010-04-30 | 2010-09-08 | 诸城市大业金属制品有限责任公司 | Arbitrary line control switch |
| US20110195207A1 (en) * | 2010-02-08 | 2011-08-11 | Sungkyunkwan University Foundation For Corporate Collaboration | Graphene roll-to-roll coating apparatus and graphene roll-to-roll coating method using the same |
| CN104084715A (en) * | 2014-07-02 | 2014-10-08 | 山东时风（集团）有限责任公司 | Non-copper plating welding wire production line and production technology |
| CN105364414A (en) * | 2015-11-20 | 2016-03-02 | 金川集团股份有限公司 | Method for surface treatment of ferro-nickel alloy wire rods |
| CN106583476A (en) * | 2016-12-28 | 2017-04-26 | 东莞市科力钢铁线材有限公司 | Silvery bright steel wire acid-washing-free and drawing treatment process |
| CN106807784A (en) * | 2015-12-01 | 2017-06-09 | 衡阳市新德力预应力有限公司 | A kind of drawing process for producing prestressing force twisted wire |
| CN107825264A (en) * | 2017-11-17 | 2018-03-23 | 杭州新坐标科技股份有限公司 | A kind of handling process and equipment of the wire rod after drawing soft annealing |
| CN108747610A (en) * | 2018-08-29 | 2018-11-06 | 江苏巨力钢绳有限公司 | Wire rod metal surface pre-treating method, wire rod rust removal method and sand blasting unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457337A (en) * | 2008-12-02 | 2009-06-17 | 浙江天伦钢丝有限公司 | Bead steel wire boronising process |
| CN204396489U (en) * | 2015-01-15 | 2015-06-17 | 天津日吉科技有限公司 | A kind of steel strand wires steel wire wire drawing production system |
| CN104525591B (en) * | 2015-01-15 | 2017-01-04 | 天津日吉科技有限公司 | A kind of steel strand wires steel wire wire drawing production system and production technology |
| CN204621842U (en) * | 2015-04-15 | 2015-09-09 | 江阴市华方机电科技有限公司 | The dustless pretreatment tinuous production of dry type steel wire |
| CN204621841U (en) * | 2015-04-15 | 2015-09-09 | 江阴市华方机电科技有限公司 | The dustless pretreatment sand blasting apparatus of dry type steel wire |
-
2018
- 2018-12-03 CN CN201811467848.XA patent/CN109647924A/en active Pending
- 2018-12-10 WO PCT/CN2018/120161 patent/WO2020113609A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110195207A1 (en) * | 2010-02-08 | 2011-08-11 | Sungkyunkwan University Foundation For Corporate Collaboration | Graphene roll-to-roll coating apparatus and graphene roll-to-roll coating method using the same |
| CN101826401A (en) * | 2010-04-30 | 2010-09-08 | 诸城市大业金属制品有限责任公司 | Arbitrary line control switch |
| CN104084715A (en) * | 2014-07-02 | 2014-10-08 | 山东时风（集团）有限责任公司 | Non-copper plating welding wire production line and production technology |
| CN105364414A (en) * | 2015-11-20 | 2016-03-02 | 金川集团股份有限公司 | Method for surface treatment of ferro-nickel alloy wire rods |
| CN106807784A (en) * | 2015-12-01 | 2017-06-09 | 衡阳市新德力预应力有限公司 | A kind of drawing process for producing prestressing force twisted wire |
| CN106583476A (en) * | 2016-12-28 | 2017-04-26 | 东莞市科力钢铁线材有限公司 | Silvery bright steel wire acid-washing-free and drawing treatment process |
| CN107825264A (en) * | 2017-11-17 | 2018-03-23 | 杭州新坐标科技股份有限公司 | A kind of handling process and equipment of the wire rod after drawing soft annealing |
| CN108747610A (en) * | 2018-08-29 | 2018-11-06 | 江苏巨力钢绳有限公司 | Wire rod metal surface pre-treating method, wire rod rust removal method and sand blasting unit |
Non-Patent Citations (1)
| Title |
|---|
| 戴宝昌: "《重要用途线材制品生产新技术》", 31 October 2001 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110202022A (en) * | 2019-05-15 | 2019-09-06 | 安徽环新集团有限公司 | Wire stripping pre-treatment production line and method for piston ring |
| CN110238236A (en) * | 2019-06-11 | 2019-09-17 | 安徽环新集团有限公司 | Shaped wire drawing production line and production method for piston ring |
| CN112643501A (en) * | 2019-10-12 | 2021-04-13 | 丹阳亿鑫合金有限公司 | Method for removing oxide layer on surface of nickel-chromium alloy |
| CN112643501B (en) * | 2019-10-12 | 2022-06-24 | 丹阳亿鑫合金有限公司 | Method for removing oxide layer on surface of nickel-chromium alloy |
| EP4023354A4 (en) * | 2019-11-19 | 2022-10-19 | Jiangsu Zhongtian Technology Co., Ltd. | Preparation method for coated alloy wire |
| CN111589893A (en) * | 2020-04-16 | 2020-08-28 | 江苏兴达钢帘线股份有限公司 | Steel wire for reinforcing rubber hose and production process thereof |
| CN111842529A (en) * | 2020-06-17 | 2020-10-30 | 江苏兴达钢帘线股份有限公司 | Production process for improving binding force between steel wire and rubber |
| CN114130849A (en) * | 2021-11-05 | 2022-03-04 | 河钢股份有限公司 | Production method of invar wire with high surface quality |
| CN114130849B (en) * | 2021-11-05 | 2024-01-05 | 河钢股份有限公司 | Production method of Yan Gangsi material with high surface quality |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020113609A1 (en) | 2020-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109647924A (en) | Pretreating process before a kind of steel wire drawing of circular cross-section | |
| CN202726693U (en) | Machinery grinding device | |
| CN102357543A (en) | Acid Washing-free and drawing-free apparatus for steel strand | |
| CN203841036U (en) | Automatic trepan cleaning and sterilizing device | |
| US10689765B2 (en) | Method for cleaning wire and device therefor | |
| CN102260876A (en) | Wire rod on-line acid-washing equipment and wire rod on-line acid-washing method | |
| WO2023045618A1 (en) | Process and device for reducing consumption of cold-rolling acid | |
| CN102244001A (en) | Acid-washing dehydration process and device of diode | |
| CN103920739B (en) | A kind of low acid consumes great surface quality with heat for cold product processes | |
| CN206783770U (en) | A kind of sour circulated filter system | |
| CN113118928A (en) | Efficient and environment-friendly stainless steel wire drawing production process | |
| CN103920736A (en) | Method for removing oxides from surface of strip carbon steel with low acid consumption | |
| CN208991451U (en) | A kind of ribbon steel letter complex acid rolling production rolls hard volume production line | |
| CN210796646U (en) | Steel bar base material surface treatment device for high-performance bolt | |
| CN103920710A (en) | Production method of low-consumption corrosion-resistant cold-rolled product | |
| CN208628772U (en) | A kind of jet stream burr remover | |
| CN103920740B (en) | A kind of low plate face remains with heat for cold product processes | |
| CN203435658U (en) | Novel fresh bamboo shoot peeling device | |
| CN208357522U (en) | A kind of metal material sheller | |
| CN202479235U (en) | Production equipment for removing scales from steel strip | |
| CN102312245A (en) | Method for polishing and whitening titanium and titanium alloy strip coil | |
| CN107419323A (en) | A kind of production method and its system without waste water environmental protection that electrogalvanizing is carried out to iron wire | |
| CN106733881A (en) | A kind of sonic cleaning system | |
| CN103920725B (en) | A kind of low plate face of great surface quality remains pickling process | |
| CN204224712U (en) | A kind of steel band pickling line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190419 |
|
| RJ01 | Rejection of invention patent application after publication |