CN208303492U - A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling - Google Patents

A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling Download PDF

Info

Publication number
CN208303492U
CN208303492U CN201820820365.2U CN201820820365U CN208303492U CN 208303492 U CN208303492 U CN 208303492U CN 201820820365 U CN201820820365 U CN 201820820365U CN 208303492 U CN208303492 U CN 208303492U
Authority
CN
China
Prior art keywords
foreplate
pass
passage
roll
copper alloy
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.)
Active
Application number
CN201820820365.2U
Other languages
Chinese (zh)
Inventor
吴明辉
孙常金
张仁波
刘念培
王甘
钱邦虎
曹普生
孙强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHU CHUANGJIANG ALLOY COPPER CO Ltd
Original Assignee
WUHU CHUANGJIANG ALLOY COPPER CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUHU CHUANGJIANG ALLOY COPPER CO Ltd filed Critical WUHU CHUANGJIANG ALLOY COPPER CO Ltd
Priority to CN201820820365.2U priority Critical patent/CN208303492U/en
Application granted granted Critical
Publication of CN208303492U publication Critical patent/CN208303492U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Metal Rolling (AREA)

Abstract

The utility model discloses a kind of novel rolling mills of copper alloy wire multi-pass continuous rolling, belong to milling equipment technical field.It includes rolling device and guide system, the guide system two sides are additionally provided with secondary system, the rolling device includes the breast roller of eight passages, breast roller described in eight is followed successively by the first plain-barreled roll, the second edger roll, third plain-barreled roll, the 4th edger roll, the 5th plain-barreled roll, the 6th edger roll, the 7th plain-barreled roll and the 8th edger roll, and breast roller described in eight is driven by eight different variable-frequency motors or servo motor respectively;The pass of first passage of the rolling device to the 6th passage is polygonized structure, and the 7th passage pass is borehole structure, and the pass of the 8th passage is borehole structure.The utility model is used for the rolling of brass wire.

Description

A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling
Technical field
The utility model relates to milling equipment technical fields, more specifically, being related to a kind of copper alloy wire multi-pass company The novel rolling mill of continuous rolling.
Background technique
During brass production, the bar base pulled out by smelting furnace is all to carry out huge machine drawing or big drawing machine drawing again It is processed into postchannel process, but often occurs core implosion, stress cracking, distortion, drawing fracture, tubing thickness during huge drawing Unevenly, the defects of product surface scratches changes the defects of institutional framework, amplification slab of wire rod, no to a certain extent Conducive to subsequent production.So also occurred in recent years some milling equipments for replace the huge drawing process of brass, rolling by rotate Rolled piece is dragged in the gap between roll by the frictional force generated between roll and rolled piece, is allowed to be generated plastic deformation by compression Pressure processing method, the product after rolling can obtain preferably tissue and performance, be conducive to subsequent processing.
Since the hardness of brass is high, using the bad processing of rolling mill practice, need to obtain by continuous multi- pass rolling On the other hand the product of required shape during the rolling process, mostly uses ellipse-circular hole system, arc groove of the rolled piece in roll In constantly rolled molding, rolled piece itself is easy to produce torsional deformation, the milling train of rolling generally use large-scale motor with And the multi-stage mechanical transmission mechanism of huge, heavy, multi-stage mechanical transmission mechanism are driven by fixed gear or belt etc., thus It is restricted the mill speed of processing unit (plant)s and transmission mechanism at different levels, causes the speed of each roll to mismatch, roll easily goes out Existing sliding phenomenon.
Utility model content
Utility model technical problems to be solved
The purpose of the utility model is to overcome in the prior art since brass hardness is high, the difficult processing of rolling, when rolling, rolls The easy torsional deformation of part, the deficiency that roll easily slides provide a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling, adopt With the technical solution of the utility model, the deflection of rolled piece can be controlled, roll is avoided to slide.
2. technical solution
In order to achieve the above objectives, technical solution provided by the utility model are as follows: a kind of copper alloy wire multi-pass continuously rolls The novel rolling mill of system, including rolling device and guide system, the rolling device include the breast roller of eight passages, eight institutes The breast roller stated is followed successively by the first plain-barreled roll, the second edger roll, third plain-barreled roll, the 4th edger roll, the 5th plain-barreled roll, the 6th edger roll, the 7th Plain-barreled roll and the 8th edger roll, breast roller described in eight are driven by eight different variable-frequency motors or servo motor respectively;
The pass of first passage of the rolling device to the 6th passage is polygonized structure, and the 7th passage pass is circular hole Structure, the pass of the 8th passage are borehole structure;
The guide system be inlet and outlet guide and guard, the inlet and outlet guide and guard include pre- conduit, upper foreplate, upper guide and guard support, Lower foreplate and lower guide and guard support, and interconnected ventilation pipe is equipped in the upper foreplate and lower foreplate;It is described Guide system two sides are additionally provided with secondary system, and the secondary system includes water tank, water pump, outlet pipe and sprinkling Portion.
It is further improved as the utility model, the pass of the first passage to the 6th passage of the rolling device is Hexagonal structure.
It is further improved as the utility model, the upper foreplate is flexibly connected with upper guide and guard support, under described Foreplate is flexibly connected with lower guide and guard support, and the spacing of the upper foreplate and lower foreplate is adjustable.
It is further improved as the utility model, the pre- conduit and upper guide and guard support and lower guide and guard support are detachable Connection.
It is further improved as the utility model, the ventilation pipe includes main channel road and and main channel What road was respectively communicated with divides ventilation pipe, described that ventilation pipe is divided to be equipped with several ventholes.
Further improved as the utility model, the apertures of several ventholes towards with upper foreplate or under The angle that foreplate is formed is on-right angle.
It is further improved as the utility model, filter screen is equipped in the water tank, the water pump goes out described in On water pipe, described outlet pipe one end joining water box, the other end are connected to spray section, which passes through universal joint and outlet pipe phase It connects.
It is further improved as the utility model, the compression ratio of each passage is 1.15-1.3, and overall compression ratio is 2.25。
Beneficial effect
Using technical solution provided by the utility model, compared with prior art, have the following beneficial effects:
(1) novel rolling mill of a kind of copper alloy wire multi-pass continuous rolling of the utility model, since wire rod is in roll Ellipse or arc groove in be rolled molding, the axial length of wire rod itself is long, therefore itself is easy to happen torsional deflection, influence Final product quality, therefore, the roll pass of the first six passage of the utility model use polygonized structure, can avoid brass wire and generate Torsional deformation, it is preferred that the roll pass of the first six passage is positive hexagonal structure, and most latter two passage passes through circle-again Round pass structure rolls brass wire for finished form, can not only will be harder by the continuous rolling of eight passages Brass wire rolling is finished product, moreover it is possible to avoid the torsional deflection of wire rod itself, rolling mill practice is compared to huge drawing process, the sense of organization It can be more excellent.
(2) novel rolling mill of a kind of copper alloy wire multi-pass continuous rolling of the utility model, rack described in eight Roll is driven by eight different variable-frequency motors or servo motor respectively, thus change simultaneously each passage breast roller pass and Revolving speed still is able to reach the synchronization of each passage rack.
(3) novel rolling mill of a kind of copper alloy wire multi-pass continuous rolling of the utility model, since pre- conduit is rolling During system, the collision that may be subjected to rack etc. causes to wear, therefore pre- conduit is seperated with upper foreplate and the use of lower foreplate Formula structure, i.e., pre- conduit is detachably arranged on foreplate and lower foreplate, easy to replace and maintain.
(4) in the operation of rolling, compressed gas is passed through in the ventilation pipe, when brass wire is using guide system, Compressed gas can reduce the friction of wire rod and foreplate inner wall, keep the slickness of wire rod, and on the other hand, compressed gas can Dedusting, decontamination can also remove oil emulsion etc., play certain cleaning action.The impact direction of compressed gas and upper guide and guard Plate or lower foreplate are kept away in oblique angle to reduce the shock of dust impurities or oil emulsion to upper foreplate or lower foreplate inner wall Exempting from use for a long time leads to hole plug of ventilating.
(5) the upper foreplate and lower foreplate are connected with cylinder push-rod, by cylinder push-rod adjust upper foreplate and The spacing of lower foreplate, to adapt to the service of connection devices of different height.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the novel rolling mill of copper alloy wire multi-pass continuous rolling of the utility model;
Fig. 2 is existing milling train machine driving schematic diagram;
Fig. 3 is the structural schematic diagram of the first plain-barreled roll;
Fig. 4 is the structural schematic diagram of the second edger roll;
Fig. 5 is the structural schematic diagram for importing and exporting guide and guard;
Fig. 6 is the top view of upper foreplate (or lower foreplate);
Fig. 7 is A-A cross-sectional view in Fig. 6;
Fig. 8 is auxiliary cleaning systems schematic diagram.
Label declaration in schematic diagram:
1, pay off rack;2, guide system;20, pre- conduit;21, upper guide and guard support;22, lower guide and guard support;23, upper guide plate; 24, bottom guide;25, main channel road;250, divide ventilation pipe;251, snorkel;26, cylinder;3, rolling device;30, first Plain-barreled roll;31, the second edger roll;32, third plain-barreled roll;33, the 4th edger roll;34, the 5th plain-barreled roll;35, the 6th edger roll;36, the 7th plain-barreled roll; 37, the 8th edger roll;4, winding system;5, motor;6, belt;7;Rack;8, secondary system;80, water tank;81, water pump; 82, outlet pipe;83, spray section;800, filter screen.
Specific embodiment
For the content for further appreciating that the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
The huge drawing process that brass production uses easily causes product defect, can change the institutional framework of wire rod, be unfavorable for subsequent Production and processing therefore how to design milling train, it is in need of consideration for capable of just rolling out qualified brass wire.The present embodiment with The brass blank of diameter 12mm rolls out the finished product citing of diameter 8mm, overall compression ratio 2.25, i.e. blank section and finished product The area ratio of section is 2.25, but the hardness of brass is high, rationally designs breast roller and pass structure of multi-pass etc. all It is very important, existing details are as follows:
Such as Fig. 1, a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling of the present embodiment, including pay off rack 1, roll Device 3, guide system 2 and winding system 4 processed, the rolling device 3 includes the breast roller of multiple passages, in order to hardness Higher brass carries out rolling processing, inventor it has been investigated that, tandem rolling processing is carried out using the breast roller of eight passages, is obtained The final product quality arrived is more excellent, and according to billet size and finished size and road sub-quantity, the compression ratio of each passage is set as 1.15-1.3.Breast roller described in eight be followed successively by the first plain-barreled roll 30, the second edger roll 31, third plain-barreled roll 32, the 4th edger roll 33, 5th plain-barreled roll 34, the 6th edger roll 35, the 7th plain-barreled roll 36 and the 8th edger roll 37, wherein the first plain-barreled roll 30, the second edger roll 31, third Plain-barreled roll 32, the 4th edger roll 33, the 5th plain-barreled roll 34, the 6th edger roll 35 pass be polygonized structure, the pass of the 7th plain-barreled roll 36 is The pass of borehole structure, the 8th edger roll 37 is borehole structure, and the pass of traditional rolled alloy wire rod is mostly ellipse-circular hole system System, but during practical milling train, since wire rod is rolled molding, the axis of wire rod itself in the ellipse or arc groove of roll It is long to length, therefore itself is easy to happen torsional deflection, influences final product quality, therefore, the roll of the first six passage of the present embodiment Pass uses polygonized structure, can avoid brass wire and generates torsional deflection, it is preferred that the roll pass of the first six passage Be positive hexagonal structure, referring to Fig. 3-4, the pass structure schematic diagram of respectively the first plain-barreled roll and the second edger roll, most latter two road Secondary again rolled brass wire by circle-circle pass structure can not only by the continuous rolling of eight passages for finished form It is enough to roll harder brass wire for finished product, moreover it is possible to avoid the torsional deflection of wire rod itself, rolling mill practice is compared to huge drawing work Skill, structure property are more excellent.
Currently, domestic milling train generally uses the multi-stage mechanical transmission mechanism of large-scale motor and huge, heavy, it is multistage Mechanical transmission mechanism is by transmissions such as fixed gears or belt, and referring to Fig. 2, motor 5 is driven by transmission belt 6, drives respectively Two racks 7, so that the mill speed of processing unit (plant)s and transmission mechanism at different levels is restricted, and leads to the speed of each roll It mismatches, sliding phenomenon easily occurs in roll.Breast roller described in eight is respectively by eight different variable-frequency electrics in the present embodiment Machine 5 or servo motor 5 drive, so changing simultaneously each passage breast roller pass and revolving speed, still are able to reach each road The synchronization of secondary rack, Fig. 1 are only schematic diagram, and the breast roller to embody per pass is equipped with individual motor driven, Actual motor arrangement is determined by the condition of production.
Referring to Fig. 5-7, the milling train further includes guide system 2, which is inlet and outlet guide and guard, the inlet and outlet Guide and guard include pre- conduit 20, upper foreplate 23, upper guide and guard support 21, lower foreplate 24 and lower guide and guard support 22, the upper guide and guard Plate 23 is fixedly connected on 21 lower section of guide and guard support, and the lower foreplate 24 is fixedly connected on lower 22 top of guide and guard support, above leads It defends and forms material passing passage between plate 23 and lower foreplate 24, during the rolling process due to pre- conduit 20, may be subjected to rack etc. Collision cause to wear, therefore pre- conduit 20 is adopted a split structure with upper guide and guard support 21 and lower guide and guard support 22, i.e., pre- conduit 20 are detachably arranged on guide and guard support 21 and lower guide and guard support 22, easy to replace and maintain.Referring to Fig. 6, it is described on lead Defend and be equipped with interconnected ventilation pipe in plate 23 and lower foreplate 24, the ventilation pipe include main channel road 25 and Divide ventilation pipe 250, the main channel road 25 and the arrangement shape for dividing ventilation pipe 250 with what main channel road 25 was respectively communicated with Formula multiplicity, the present embodiment provides one of arrangement form, for the above foreplate 23, the main channel road 25 is from upper guide and guard The side of plate 23 and passed to inside it along the width direction of upper foreplate 23, five points of ventilation pipes 250 be arranged in parallel and with Main channel road 25 is mutually perpendicular to, and five points of ventilation pipes 250 are connected to main channel road 25, described to divide ventilation pipe 250 It is equipped with several ventholes 251, and the angle that the aperture direction of the venthole 251 is formed with upper foreplate 23 or lower foreplate 24 Degree is on-right angle.
In the operation of rolling, compressed gas is passed through in the ventilation pipe, brass wire is when by guide system, compression The impact of gas can reduce the friction of wire rod and foreplate inner wall, keep the slickness of wire rod, on the other hand, compressed gas energy Enough dedusting, decontamination, can also remove oil emulsion etc., play certain cleaning action.Since the opening of venthole is not towards It is perpendicular to foreplate or lower foreplate, therefore, the impact direction of compressed gas and upper foreplate or lower foreplate are in oblique angle, To reduce the shock of dust impurities or oil emulsion to upper foreplate or lower foreplate inner wall, use for a long time is avoided to cause to ventilate Hole plug.
Referring to Fig. 8,2 two sides of guide system are additionally provided with secondary system 8, and the secondary system 8 is used to prevent The only splashing of dust, oil emulsion etc. comprising water tank 80, water pump 81, outlet pipe 82 and spray section 83, on the outlet pipe 82 Equipped with water pump 81,82 one end joining water box 80 of outlet pipe, the other end are connected to spray section 83, and spray section 83 is by universal joint and goes out Water pipe 82 connects, and brass wire meets water by the dust, impurity, oil emulsion etc. generated when guide system 2, condenses into solid-state or liquid State is then fallen into together with water in water tank 80, filter screen 800 is equipped with inside water tank 80, above-mentioned dust, impurity or oil emulsion are herein Place is filtered, and water tank 80 is entered after filtering, what is be repeated recycles, it is only necessary to which periodic cleaning is all right.
Embodiment 2
Comprising above content, the spacing of the upper foreplate 23 and lower foreplate 24 is preferably adjustable, i.e., Upper foreplate 23 is flexibly connected with upper guide and guard support 21, and the lower foreplate 24 is flexibly connected with lower guide and guard support 22, it is described on Foreplate 23 and lower foreplate 24 are connected with the push rod of cylinder 26, adjust upper foreplate 23 and lower foreplate by cylinder push-rod 24 spacing, to adapt to the service of connection devices of different height.
Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.

Claims (8)

1. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling, including rolling device (3) and guide system, feature Be: the rolling device (3) includes the breast roller of eight passages, and breast roller described in eight is followed successively by the first plain-barreled roll (30), the second edger roll (31), third plain-barreled roll (32), the 4th edger roll (33), the 5th plain-barreled roll (34), the 6th edger roll (35), the 7th flat Roller (36) and the 8th edger roll (37), breast roller described in eight are driven by eight different variable-frequency motors or servo motor respectively It is dynamic;
The pass of the first passage to the 6th passage of the rolling device (3) is polygonized structure, and the 7th passage pass is circular hole Structure, the pass of the 8th passage are borehole structure;
The guide system (2) be inlet and outlet guide and guard, the inlet and outlet guide and guard include pre- conduit (20), upper foreplate (23), on lead Support (21), lower foreplate (24) and lower guide and guard support (22) are defended, and in the upper foreplate (23) and lower foreplate (24) Equipped with interconnected ventilation pipe;Guide system (2) two sides are additionally provided with secondary system (8), the secondary System (8) includes water tank (80), water pump (81), outlet pipe (82) and spray section (83).
2. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1, it is characterised in that: institute The pass for stating the first passage to the 6th passage of rolling device (3) is hexagonal structure.
3. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1, it is characterised in that: institute It states foreplate (23) to be flexibly connected with upper guide and guard support (21), the lower foreplate (24) and the activity of lower guide and guard support (22) are even It connects, the spacing of the upper foreplate (23) and lower foreplate (24) is adjustable.
4. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1, it is characterised in that: institute Pre- conduit (20) is stated to be detachably connected with upper guide and guard support (21) and lower guide and guard support (22).
5. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1, it is characterised in that: institute Ventilation pipe is stated to include main channel road (25) and divide ventilation pipe (250), institute with what main channel road (25) were respectively communicated with A point ventilation pipe (250) are stated equipped with several ventholes (251).
6. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 5, it is characterised in that: if The angle that the aperture direction of the dry venthole (251) is formed with upper foreplate (23) or lower foreplate (24) is on-right angle.
7. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1, it is characterised in that: institute It states in water tank (80) and is equipped with filter screen (800), the water pump (81) is located on the outlet pipe (82), the outlet pipe (82) one Joining water box (80), other end connection spray section (83) are held, which is connected by universal joint with outlet pipe (82).
8. a kind of novel rolling mill of copper alloy wire multi-pass continuous rolling according to claim 1-7, special Sign is: the compression ratio of each passage is 1.15-1.3, overall compression ratio 2.25.
CN201820820365.2U 2018-05-30 2018-05-30 A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling Active CN208303492U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820820365.2U CN208303492U (en) 2018-05-30 2018-05-30 A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820820365.2U CN208303492U (en) 2018-05-30 2018-05-30 A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling

Publications (1)

Publication Number Publication Date
CN208303492U true CN208303492U (en) 2019-01-01

Family

ID=64716781

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820820365.2U Active CN208303492U (en) 2018-05-30 2018-05-30 A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling

Country Status (1)

Country Link
CN (1) CN208303492U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116078810A (en) * 2023-02-17 2023-05-09 科城精铜(广州)有限公司 Rolling device and method for improving tensile strength of copper rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116078810A (en) * 2023-02-17 2023-05-09 科城精铜(广州)有限公司 Rolling device and method for improving tensile strength of copper rod
CN116078810B (en) * 2023-02-17 2023-11-07 科城精铜(广州)有限公司 Rolling device and method for improving tensile strength of copper rod

Similar Documents

Publication Publication Date Title
CN102397892B (en) Device for removing oil on surface of belt material
WO2010105577A1 (en) Plunger type laminar flow cooling device
CN202915823U (en) Heat exchanger tube pass washing device
CN208303492U (en) A kind of novel rolling mill of copper alloy wire multi-pass continuous rolling
CN209754853U (en) Anti-seismic hot-rolled ribbed steel bar rust prevention treatment device
CN103447322A (en) High-pressure spraying and cleaning device for cold-rolled strip steel
CN202387726U (en) Combined straightening, polishing and washing integrated machine for cold-roll steel sheet
CN208303505U (en) Novel rolling mill is used in a kind of production of brass
CN107433291A (en) A kind of metal wire material wire-drawing machine
CN101417291A (en) Surface foreign matter clearing device on rubber roll
CN112296103B (en) Cooling process of hot rolled steel plate
CN212190654U (en) Coiling machine for producing galvanized sheet
CH711744A1 (en) Cleaning procedure for a tape buffer and tape buffer with a cleaning device.
CN101812697B (en) Method for raising threading steel of push-pull type pickling
CN107309284A (en) Remove the emulsion remained device of Cold tandem mill strip steel edge
CN111570346A (en) Deposition device and method for stainless steel surface treatment
CN205798013U (en) A kind of degreasing unit for hydraulic cold milling train
CN206046655U (en) Noble metal tablet machine
CN213915466U (en) Aluminum coil cold rolling device
CN109127742A (en) A kind of copper strips processing hot-rolling arrangement
CN202638906U (en) Surface blowing and sweeping device for hot rolling product
CN213793753U (en) High-precision metal product punch forming machine
CN207756614U (en) A kind of cold by-pass collar of multi-wire cutting sub-control
CN209792285U (en) wire drawing machine
CN209477699U (en) A kind of roller turning Compositions of metal-working machines

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant