CN106319410A - Machining process for zinc brass - Google Patents
Machining process for zinc brass Download PDFInfo
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- CN106319410A CN106319410A CN201510351645.4A CN201510351645A CN106319410A CN 106319410 A CN106319410 A CN 106319410A CN 201510351645 A CN201510351645 A CN 201510351645A CN 106319410 A CN106319410 A CN 106319410A
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- yellow copper
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Abstract
The invention discloses a machining process for zinc brass. The process comprises the steps of stretching, peel planning, continuous stretching, annealing, rolling and the like. The machining process has the following advantages that 1, no acid pickling is needed, so that the influences on the environment are reduced, the production cost is lowered, and the damage to laborers are reduced; 2, annealing is conducted through on-line direct voltage to replace original oxidizing annealing, so that loss of brass in oxidizing annealing is reduced, and brass resources are used to the maximum; 3, high-speed continuous stretching and continuous annealing and the technique of a large machining rate of brass are used to replace original multi-pass repetitive stretching, so that the labor productivity is effectively improved, the machining process has practical significance, and an original production and machining mode in the whole industry can be changed.
Description
Technical field
The present invention relates to copper production technical field, particularly to the processing technique of a kind of zinc yellow copper.
Background technology
In the evolution of brass wire processing, initial process equipment substantially uses the process equipment of steel to produce, and drawing process is that single pass is processed, and utilizes oxidizing annealing to solve the interior tissue recrystallization problem after blank stretching between every time.Process equipment is the equipment that steel processes that commonly used sleeping machine drawing or three is even drawn etc, and mechanicalness noise is big.Its mold lubrication all uses butter to be lubricated, and oil smoke is relatively big in use, and environmental pollution is heavier, and the labor intensity of workman is relatively big simultaneously, and production efficiency is low.Needing after annealing to carry out ability reworking after pickling, whole pickling process has greater environmental impacts, and the proportion of goods damageds of copper are high, and the yield rate of copper material is relatively low, impacts environment simultaneously, damages labourer's health.Later stage, on the basis of singly drawing, has carried out even drawing improvement, but has substantially connected machine drawing based on pulley-type, and mold lubrication still uses butter to lubricate, but working modulus is not essentially exceeding 60%.This kind equipment problem to existing when still suffering from singly drawing equipment to use.
Along with the progress of society, the reinforcement of environmental protection consciousness and the continuous of operator's autoprotection are strengthened by the mankind, and the labor productivity of whole industry is also required to ceaselessly promote.Improve operating environment, reduce the labor intensity of operator, improve the development trend that labor productivity is common zinc yellow Copper fabrication of whole link.The method that the development of the processing technique of common zinc yellow casting in bronze base will combine red copper processing, utilize the type of water tank machine, utilize emulsion to be lubricated, the characteristic processed according to the multi-pass of pyrite, every time mechanical draft of reasonable distribution, solves the problem that big working modulus is continuously elongated.Another kind of developing direction then produces for continuously extruded mode, owing in ormolu, the fusing point of zinc is much lower compared with copper, the most also cannot solve to analyse the problem of zinc in extrusion process, be also required to solve the problem that oxidizing annealing needs pickling simultaneously.
Summary of the invention
The technical problem to be solved is, for the deficiencies in the prior art, it is provided that a kind of processing technique that can once produce the zinc yellow copper directly processing, avoiding pickling.
For solving above-mentioned technical problem, the technical scheme is that the processing technique of a kind of zinc yellow copper, described technique comprises the following steps:
A) stretching: use drawing-die that zinc yellow copper is stretched, zinc yellow copper is cooled down, and by the crystallization stricture of vagina refinement of pyrite casting billet surface, zinc yellow copper is determined core simultaneously；
B) plane skin: use plane mould to carry out zinc yellow copper digging skin, remove its surface crystallization stricture of vagina；
C) even draw: use machine drawing that zinc yellow copper carries out multimode and even draw, the line footpath of zinc yellow copper is pulled to 2.2～3.0mm by 8.0mm；
D) annealing: use the annealing of preheating section, bringing-up section, cooling section syllogic, uses DC voltage to anneal；
E) rolling: zinc yellow copper is carried out alignment, then rolling.
In step c, it is 9 Mo Lianla that multimode is even drawn, and pulling rate degree is 390m/min, and by 8.0mm, the line footpath of zinc yellow copper is pulled to 2.8mm.
In step d, direct current annealing voltage is 61v, and size of current is 2KA.
In step b and c, all use emulsion to be sprayed on drawing-die tool and be lubricated.
The present invention uses said method, has the advantage that 1, without pickling, reduces the impact on environment, reduces production cost and the injury to labourer；2, the copper loss mistake carrying out the original oxidizing annealing of annealing replacement with online DC voltage, reducing in oxidizing annealing, it is possible to resolve copper resource maximally utilizes problem；3, utilize high speed Lian Lalian to move back and pyrite big working modulus technology replaces original multi-pass repeated stretching the problem such as effectively to raise labour productivity, there is the meaning of reality, the original production and processing mode of whole industry can be changed.
Detailed description of the invention
A kind of processing technique of zinc yellow copper, it is characterised in that: described technique comprises the following steps:
A) stretching: use drawing-die that zinc yellow copper is stretched, zinc yellow copper is cooled down, and by the crystallization stricture of vagina refinement of pyrite casting billet surface, zinc yellow copper is determined core simultaneously；
B) plane skin: use plane mould to carry out zinc yellow copper digging skin, remove its surface crystallization stricture of vagina；
C) even draw: use machine drawing that zinc yellow copper carries out multimode and even draw, the line footpath of zinc yellow copper is pulled to 2.2～3.0mm by 8.0mm；
D) annealing: use the annealing of preheating section, bringing-up section, cooling section syllogic, uses DC voltage to anneal；
E) rolling: zinc yellow copper is carried out alignment, then rolling.
In step b and c, all use emulsion to be sprayed on drawing-die tool and be lubricated.Utilizing emulsion lubrication to replace butter to lubricate the most exactly, emulsion carries out continuous lubrication by spray on drawing-die has, and also acts as the effect of cooling mould in addition to reducing pickling, it is to avoid the raw cigarette of butter lubricated dies heating, improves production environment and draws efficiency.
In step c, it is 9 Mo Lianla that multimode is even drawn, and 9 Mo Lianla i.e. need processing wire rod to continue through 9 drawing-die tools and realize the form processing of the stretching plastic deformation that line footpath diminishes, length increases.Pulling rate degree is 390m/min, and by 8.0mm, the line footpath of zinc yellow copper is pulled to 2.8mm, 2.8mm best results.
In step d, direct current annealing voltage is 61v, and size of current is 2KA.
The application in drawing greatly water tank machine of the Lian Lalian plane technology is mainly according to the plane skin technology of former sleeping machine drawing, in a step, feature in conjunction with water tank machine, a unit is individually increased in water tank machine inlet wire front end, comprise a set of drawing-die and drawing-die cooling and lubricating device, the effect of this drawing-die acts primarily as first stretching, is refined by the crystallization stricture of vagina of pyrite casting billet surface, plays plane mould simultaneously and determines core effect；A set of peeling device and plane skin mould cooling apparatus, primarily serve and the wire rod after stretching together removed surface crystallization stricture of vagina.Increasing excessive according to hardness after pyrite together processing, deep camber bending can lead broken wires, replaces the cone pulley structure of former red copper big drawing machine with plain-barreled roll drawing wheel, according to the size in footpath, is equipped with the cone pulley of different-diameter in water tank machine.Processing characteristics according to pyrite, its working modulus can not be distributed equally according to total working modulus, use, according to the line footpath processing characteristics of each passage, use by the mode subtracted to design the mechanical draft of per pass plain-barreled roll drawing wheel, utilize Gear Processing precision and the machining accuracy of mould of plant equipment, ensure that skidding coefficient minimizes, reduce the abrasion of plain-barreled roll drawing wheel, solve pyrite during big working modulus, the difficult problem that more post-treatment the most easily breaks, ensures for the processing offer equipment of rate greatly.Original water tank type machine drawing is generally adopted by the design structure of main frame and constant speed wheel one, but when this structure changes specification aborning, need according to different outlet specifications, weigh neoallotype and wear mould, during equipment replacement specification, efficiency is low, the drive system of main machine drawing, when the continuous pull system of high-effect pyrite is developed, is independently separated by this department with the drive system that constant speed is taken turns, between last passage constant speed wheel is together with front
Machinery draft adjustable, utilize the combination of Direct Current Governor System and industrial control system, reach the purpose well controlled, this point makes when changing outlet specification, only mould need to be increased or decreased in constant speed Lun Qian road, change outlet mould again can complete, be not required to change whole moulds in front road, the die change efficiency of raising；Owing to the electric conductivity of pyrite is poorer than red copper, its heat-conductive characteristic is poorer than red copper, the hardness ratio red copper of the large dimension wire before annealing wants much harder, utilize original red copper to be pulled in greatly line annealing device and be not suitable for the online annealing of pyrite, all of annealing wheel in this exploitation, the radius of curvature of passageway wheel and cabling is all accordingly increased, in Step d, syllogic annealing is used on annealing way, reason due to poorly conductive, add preheating section and heading-length, owing to heat-conductive characteristic is poor, add the cooling section of quick cooling device and prolongation, in annealing electrical control, have employed the annealing regulation pattern of high voltage low current, solve problem above；With water tank machine drawing synchronization aspects, driving by the constant speed wheel drive of machine drawing of annealing machine, it is ensured that anneal synchronization with what front road drew.Flos Mume line of fall lap former is commonly used in the big-and-middle aqueous phase machine drawing of red copper, pyrite draws and in moving back, also has application, but pyrite draws the line footpath of produced product simply left and right, after its annealing little with the performance difference of red copper, but the line footpath of pyrite that this continuous pull system of high-effect pyrite is produced all exists
Above, its hardness is bigger than the hardness that the red copper of this specification is annealed, and is easily generated distortion when rolling, not easy-formation, this kind of characteristic according to pyrite, in step e, traditional plum blossom wire winding machine increases inlet wire coalignment, eliminates the stress within pyrite, reach the purpose of the free rolling line of fall, through test of many times, rolling is respond well, is entirely capable of meeting the line of fall demand in various big gauge wire footpath.Due to the application in Industry Control of the AC frequency conversion system, existing most of machine drawings all have employed AC frequency conversion system, during the exploitation of this high-effect pyrite continuous pull system, the velocity control accuracy utilizing encoder to be combined with direct current control device device in view of direct current generator is higher than a.c.frequency converting control, the dynamic direct current generator that all uses, utilize the combination of industry control program and direct-flow controlling device, solve the speed proportioning between each position and linkage problem, enhance equipment traveling comfort.Improve device rate, make pulling rate degree reach 600 ms/min, solve the brass wire problem that the section of drawing speed can not promote greatly.Water tank machine drawing is used to have good barrier propterty.Emulsion reusable edible.
In former technological process, 8.0mm continuous up-casting bar base or soft state connect machine drawing through 560 vertical five and are worked into 4.5mm, again through overpickling after push rod furnace carries out oxidizing annealing, utilize 400 plain-barreled roll water tanks to be machined to the semi-finished product of 2.2～3.0mm, then after oxidizing annealing and pickling, just can carry out the processing of lower a time.
In existing technological process, 8mm continuous up-casting bar base or soft state produce the soft state that directly can be machined to 2.2～3.0mm through the excessive company of drawing setback row a time, enter back into the production of rear a time.
Utilizing emulsion lubrication replace butter lubrication and reduce pickling link, it is not necessary to pickling, reduce the impact on environment, the injury to labourer reduces；The copper loss mistake carrying out the original oxidizing annealing of annealing replacement with online DC voltage, reducing in oxidizing annealing, it is possible to resolve copper resource maximally utilizes problem；Utilize high speed Lian Lalian to move back and pyrite big working modulus technology replaces original multi-pass repeated stretching the problem such as effectively to raise labour productivity, there is the meaning of reality, the original production and processing mode of whole industry can be changed.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. the processing technique of a zinc yellow copper, it is characterised in that: described technique comprises the following steps:
A) stretching: use drawing-die that zinc yellow copper is stretched, zinc yellow copper is cooled down, and by the crystallization stricture of vagina refinement of pyrite casting billet surface, zinc yellow copper is determined core simultaneously；
B) plane skin: use plane mould to carry out zinc yellow copper digging skin, remove its surface crystallization stricture of vagina；
C) even draw: use machine drawing that zinc yellow copper carries out multimode and even draw, the line footpath of zinc yellow copper is pulled to 2.2～3.0mm by 8.0mm；
D) annealing: use the annealing of preheating section, bringing-up section, cooling section syllogic, uses DC voltage to anneal；
E) rolling: zinc yellow copper is carried out alignment, then rolling.
The processing technique of a kind of zinc yellow copper the most according to claim 1, it is characterised in that: in step c, it is 9 Mo Lianla that multimode is even drawn, and pulling rate degree is 390m/min, and by 8.0mm, the line footpath of zinc yellow copper is pulled to 2.8mm.
The processing technique of a kind of zinc yellow copper the most according to claim 1, it is characterised in that: in step d, direct current annealing voltage is 61v, and size of current is 2KA.
The processing technique of a kind of zinc yellow copper the most according to claim 1, it is characterised in that: in step b and c, all use emulsion to be sprayed on drawing-die tool and be lubricated.
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| CN201510351645.4A CN106319410A (en) | 2015-06-24 | 2015-06-24 | Machining process for zinc brass |
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| CN201510351645.4A CN106319410A (en) | 2015-06-24 | 2015-06-24 | Machining process for zinc brass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702033A (en) * | 2018-12-28 | 2019-05-03 | 芜湖楚江合金铜材有限公司 | A kind of production method of video brass wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702033A (en) * | 2018-12-28 | 2019-05-03 | 芜湖楚江合金铜材有限公司 | A kind of production method of video brass wire |
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Application publication date: 20170111 |