CN108262359A - A kind of process for improving cold rolling titanium strip coil surface quality - Google Patents
A kind of process for improving cold rolling titanium strip coil surface quality Download PDFInfo
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- CN108262359A CN108262359A CN201810231263.1A CN201810231263A CN108262359A CN 108262359 A CN108262359 A CN 108262359A CN 201810231263 A CN201810231263 A CN 201810231263A CN 108262359 A CN108262359 A CN 108262359A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
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Abstract
A kind of process for improving cold rolling titanium strip coil surface quality, the step of including annealing ball blast pickling, the volume reconditioning of hot rolling titanium the step of, cold rolling the step of, degreasing the step of, semi-finished product reconditioning the step of and the step of ball blast pickling.The process of the present invention, is set and defect reconditioning minimizing technology by rational process route, the defects of can eliminating titanium volume surface peeling, press-in, oxidized residual to greatest extent and scratch, to significantly improve cold rolling titanium strip coil surface quality.Method itself is easy to operate, and reliability is good, is suitable for mass industrial production, can stablize and obtain the excellent cold rolling titanium strip coil of surface quality.
Description
Technical field
The present invention relates to the processing technique field of metallic titanium material, specifically a kind of improvement cold rolling titanium strip coil surface matter
The process of amount.
Background technology
Titanium or titanium alloy has that specific strength is high, the excellent specific properties such as anti-corrosion, in necks such as oil, chemical industry, metallurgy, electric power, environmental protection
Domain is widely used.Cold rolling titanium strip coil has many advantages, such as that production efficiency is high, dimensional accuracy is high, product quality uniform stability is good, and
It is suitable for mass industrial production, is titanium plate, band production major way.But it is influenced by many factors, at present country's cold rolling
Titanium strip coil surface quality generally has to be hoisted, and yields is average less than 80%.Main surface defect has peeling（Such as 1 institute of attached drawing
Show）, press-in（As shown in Figure 2）, oxidized residual（As shown in Figure 3）And it scratches（As shown in Figure 4）Deng.Cause these defects
Influence factor include that titanium self character, titanium be metallurgical and process unit and technical merit etc., it is specifically as follows：（1）Titanium
Chemical property is active under high temperature, case hardness is low, is also easy to produce in the hot rolling operation of rolling and bonds, press-in and scratches defect, hardly possible plus
Work, and defect removal difficulty is big, easily leaves to cold rolled titanium band and is rolled into product；（2）Titanium belongs to refractory metal, needs under vacuum environment
Melting is carried out, smelting equipment is complicated, and slab prepares metallurgical quality to melting raw material, smelting equipment and process quality control requirement
Height easily occurs to lead to titanium strip coil surface peeling because of slab metallurgical imperfection；（3）To reduce titanium strip coil investment of production equipment cost,
Steel processing industry large size steel rolling equipment is made full use of, domestic hot rolling titanium strip coil is generally processed in steel mill, i.e. titanium, the rolling of steel hot rolling
Mixed production, but titanium differs greatly with steel hot rolling processing metallic character, and steel mill is guarantee main business coils of hot-rolled steel processing quality, it is difficult to
Comprehensive system is carried out to large-scale steel rolling equipment and the tissue mode of production to be thoroughly transformed, be only capable of not influencing steel for titanium volume attribute
Limited improvement is carried out under the premise of volume production, and titanium volume hot rolling class defect is difficult to avoid completely, and steel rolling equipment is difficult before rolling titanium
The iron scale thorough cleaning that rolling line is adhered to is clean, therefore can generate press-in in inevitable titanium volume course of hot rolling, scratch class
Defect, hot rolling titanium volume surface quality are difficult to ensure that stability is poor；（4）Hot rolling titanium volume is first removed by continuous annealing ball blast pickling
Surface scale carries out cold rolling again, but since titanium is anti-corrosion, and pickling line acid strength periodicity, hysteresis quality in by process
It influencing, hot rolling titanium rolls up surface scale and is difficult to thoroughly remove through a ball blast pickling processes clean, oxidized residual region plasticity is poor,
Hardness is high, inconsistent with matrix extensional in subsequent cold-rolled process, and titanium volume cold rolling rear surface is caused to crack, be pressed into
Defect；（5）Cold rolling titanium strip coil EB strand uses in recent years gradually increase, and VAR forging stock dosages gradually decrease, and can significantly reduce blank
Cost, but the EB strands prepared through melting once are coarse relative to the VAR forging stock tissues through multiple melting and forging, and it is prepared by blank
Quality and hot rolling rolling quality control difficulty bigger, hot rolling titanium rolls skin, press-in defect occurence tendency increases；（6）Titanium thermal conductivity
Low, easy bonding, when its reconditioning and post-processing approach not at that time, heat conduction in reconditioning region does not go out to be also easy to produce burning defect, and
The titanium slag and abrasive cement that reconditioning is fallen easily are adhered to titanium belt surface under high temperature action and generate secondary operation defect, because
This titanium volume surface defect removal difficulty is big.More than present situation and reason are based on, obtains the excellent cold rolling titanium strip coil of surface quality more
It is difficult.
106269930 A of patent CN disclose a kind of improvement method of the titanium with hot-working surface quality, are reduced including passing through
Hot rolling reeling speed optimizes crimping machine flipper guide structure and pressure coefficient, reduces winding flipper guide frictional force, Yi Jizeng
Add curling flipper guide outlet side blowing apparatus, so as to reduce hot rolling titanium volume surface hot rolling class defect；Patent CN 105710141
A discloses a kind of hot rolling titanium volume and its Methods of Surface Quality Control, including passing through the heating of titanium base, roughing, finish rolling and coiling technique
Surface purging water management, realizes and reduces hot rolling class defect, improve hot rolling in parameter optimization and increase titanium base finishing stands
Titanium rolls up surface quality purpose.The basic ideas of above-mentioned two patents are by reducing hot rolling class defect, to improve hot rolling
Titanium rolls up surface quality.But it is influenced by the factors such as titanium self character and steel mill's hot rolling equipment, up to now, hot rolling titanium volume surface adds
Work class defect is only capable of mitigating to a certain degree, is very difficult to avoid completely.And above-mentioned patent produces the problems such as titanium base metallurgy and surface quality
Raw titanium strip coil surface defect can not still obtain the excellent cold rolling titanium strip coil of surface quality without improvement.
104070076 A of patent CN disclose a kind of process of surface treatment of cold rolling hot rolling titanium volume, including being thrown with primary
Ball processing carries out surface machinery dephosphorization, and local defect, pickling removal surface oxide layer, secondary ball blast are handled with grinding method
And pickling carries out Surface uniformization, then carries out cold rolling.By the grinding method, can reduce to a certain extent titanium volume surface size compared with
Big major defect（As shown in attached drawing 5, attached drawing 6）, but after breaking phosphorus due to ball blast, before pickling, hot rolling titanium volume surface oxide layer is not
Grey black is presented in removal completely（As shown in Figure 7）, and ball blast surface roughness is big（About 6 ~ 10 μm）, the smaller surface of size is risen
The defects of skin, press-in（As shown in Figure 8）It is difficult to it finds and removes clean.In addition the patent is not to titanium volume surface defect reconditioning side
Method illustrates, and how to remove surface defect totally, and it is that industry faces mainly that reconditioning titanium slag is avoided, which to bond secondary defect,
One of problem, this results in defect to leave to cold rolled titanium band and is rolled into product, therefore can not still obtain the excellent cold rolled titanium of surface quality
Band volume.
102310314 B of patent CN disclose a kind of titanium or titanium alloy volume processing method, after a Shot Blasting,
Local defect is handled, then carry out the processes such as follow-up pickling and cold rolling, but itself and 104070076 A mono- of patent CN with grinding method
The defects of smaller surface peeling of size, press-in, still can not be found and removed totally, and do not propose the defects of effectively suitable by sample
Grinding method, it is unresolved how to realize that titanium volume surface defect removal is clean, reconditioning titanium slag is avoided to bond secondary defect problem, therefore
Also the excellent cold rolling titanium strip coil of surface quality can not be obtained.
At present, there are no carry out the improved process of preferable technology to cold rolling titanium strip coil surface quality to go out in the prior art
It is existing.
Invention content
In order to solve the above technical problem, the present invention provides it is a kind of improve cold rolling titanium strip coil surface quality process,
This method is set by rational process route and defect reconditioning minimizing technology, can eliminate titanium volume surface to greatest extent and rise
The defects of skin, press-in, oxidized residual and scuffing, to significantly improve cold rolling titanium strip coil surface quality.Method itself is easy to operate, surely
Determine good reliability, be suitable for mass industrial production, can stablize and obtain the excellent cold rolling titanium strip coil of surface quality.
The present invention is in order to solve the above technical problems, used technical solution is：A kind of improvement cold rolling titanium strip coil surface matter
The process of amount, includes the following steps：
Step 1: annealing ball blast pickling：Using continuous annealing ball blast pickling line, annealed to hot rolling titanium volume raw material and at least
Surface non-scale residual is made in ball blast pickling, is silvery white in color, uniform bright pickling state hot rolling titanium volume, spare；
Step 2: hot rolling titanium rolls up reconditioning：Pickling state hot rolling titanium volume made from step 1 is subjected to uncoiling inspection, hot rolling titanium is rolled up
The large scale defect of case depth >=0.3mm first carries out reconditioning using angle grinder, reuses sized flap wheel and carries out local polishing, right
In the small sized defects of hot rolling titanium volume case depth ＜ 0.3mm, directly it is polished using sized flap wheel；
Step 3: cold rolling：Hot rolling titanium volume after being polished to step 2 carries out cold-rolling treatment, and control cold rolling reduction is 5 ~ 60%, system
Cold rolled titanium band is obtained, it is spare；
Step 4: degreasing：On degreasing line, ungrease treatment is carried out to cold rolled titanium band made from step 3, degreasing titanium band is made, it is standby
With；
Step 5: semi-finished product reconditioning：Using the sized flap wheel of 80 ~ 120# models, along rolling direction to degreasing titanium made from step 4
With the progress secondary inspection of surface defect and polished reconditioning；
Step 6: ball blast pickling：Ball blast pickling processes are carried out again to the titanium band after step 5 reconditioning, that is, are completed to cold rolled titanium band
Roll up the improvement of surface quality.
Further, in the step 1, the number of ball blast pickling is once or twice.
Further, in step 2, the direction that the angle grinder carries out reconditioning and sized flap wheel is polished is along heat
The rolling direction of titanium volume is rolled, and the reconditioning of angle grinder and the polishing action of sized flap wheel are equal at hot rolling titanium volume surface defect
Even travelling.
Further, in step 2, the model of the angle grinder and sized flap wheel is 40 ~ 80#.
Further, in step 3, the cold rolling reduction is preferably 10 ~ 35%.
Advantageous effect：
1st, it is provided by the invention it is a kind of improve cold rolling titanium strip coil surface quality process, by production process flow and lack
Fall into the optimization of grinding method, overcome in the prior art can not removal the defects of the smaller peeling of size, press-in is clean and
Reconditioning titanium slag easily bonds the technical barrier for causing secondary defect, can significantly improve cold rolled titanium band and be rolled into product surface quality, and stablize
Obtain the excellent cold rolling titanium strip coil of surface quality.The defects of in processing step for different type, scale and severity, design
Targetedly fault detection, identification and removing step, so as to achieve the best removal effect of titanium volume surface defect.In method
For depth >=0.3mm, and can visually examine the medium and major defect of discovery, first using grinding efficiency it is high, easily remove thickness
Angle grinder carry out reconditioning, reuse Chiba buff polishing and avoid adherency of the titanium slag in titanium belt surface；For the small rulers of depth ＜ 0.3mm
Very little defect, using be not easy to adhere to titanium slag, easily observation confirms whether defect removes clean sized flap wheel reconditioning and directly polish removal.One
Secondary to roll up the step of carrying out secondary check and reconditioning to cold rolling semi-finished product titanium for after reconditioning, being additionally provided with, which can effectively keep away
Exempt from a reconditioning defect and omit problem；The small titanium slag of thinning surface adherency is rolled up for titanium, Dispersed precipitate, visually is difficult to examine hair
The microsize remained on surface defect of existing and reconditioning removal and oxidation, using the dephosphorization of ball blast pickling machinery and chemical attack after cold rolling
Method is thoroughly removed.Meanwhile reconditioning twice is separately positioned on after hot rolling ball blast pickling and cold rolling by process of the invention
Afterwards, this step design method can make titanium belt surface defect be more easy to be amplified and examine discovery, so as to ensure that defect removes
Effect.Cold rolling titanium strip coil surface yields made of process using the present invention production by conventional method≤80% stablize
More than 90% is promoted to, even up to more than 95%, the rejection rate as caused by surface defect reduces by more than 10%, production cost drop
Low more than 15%, remarkable in economical benefits solves the technology that cold rolling titanium strip coil surface quality is not high, yields is low in the prior art
Problem.
2nd, process titanium of the invention volume surface defect removal effect is good, and can be substantially improved to titanium base and hot rolling titanium volume
The adaptability of quality fluctuation, and then batch production cold rolled titanium roll quality stability is significantly improved, this is to industrial mass steady production
It is most important.
3rd, it is invested without newly added equipment, the art of this patent implementation result can be realized, and be suitble to scale by steel mill's equipment
Change batch production, the cold rolled titanium band of preparation be rolled into product surface quality is good, yields is high, rejection rate is low, material rate is high, product cost
It is low, remarkable in economical benefits.
4th, cold rolling titanium strip coil is chiefly used in manufacturing the severe special equipment of the Service Environments such as anti-corrosion, high temperature resistant, using this patent
Cold rolled titanium band prepared by technology is rolled into product, and not only surface defect removal effect is good, yields is high.And it is repaiied twice in production process
Mill can play role of inspection, cold rolling finished product defect missed detection risk can be significantly reduced, therefore product quality hidden danger is low, so as to improve
The reliability of downstream titanium equipment and service life.
Description of the drawings
Fig. 1 is the picture that cold rolling titanium strip coil surface has peeling defect in the prior art；
Fig. 2 is the picture that cold rolling titanium strip coil surface has that surface is pressed into defect in the prior art；
Fig. 3 is the picture that cold rolling titanium strip coil surface has oxidized residual defect in the prior art；
Fig. 4 is the picture that cold rolling titanium strip coil surface has surface tear defect in the prior art；
Fig. 5 is the larger press-in defect of cold rolling titanium strip coil surface size in the prior art（Pickling face）Picture；
Fig. 6 is the larger peeling defect of cold rolling titanium strip coil surface size in the prior art（Pickling face）Picture；
Fig. 7 is hot rolling titanium strip coil ball blast state surface in the prior art（Non- pickling）Picture；
Fig. 8 is the smaller defect of hot rolling titanium strip coil surface size in the prior art（Pickling face）Picture；
Fig. 9 is the smaller defect of hot rolling titanium strip coil surface size in the prior art（Pickling face）Picture.
Specific embodiment
With reference to specific embodiment, the present invention will be further described in detail：
A kind of process for improving cold rolling titanium strip coil surface quality, includes the following steps：
The first step, annealing ball blast pickling：Using continuous annealing ball blast pickling line, annealed to hot rolling titanium volume and descale at
Reason, and sight check surface quality, surface should be remained without black gray expandable sheet or dotted oxide skin, obtained surface and are silvery white in color,
The pickling state hot rolling titanium volume of even light.As after a ball blast pickling, there are visual oxide skin residuals, then need to carry out secondary ball blast acid
Wash processing.
Second step, the volume reconditioning of hot rolling titanium：Uncoiling sight check and reconditioning, depth >=0.3mm are larger-size medium and tight
Weight surface defect carries out reconditioning, then be polished with sized flap wheel using angle grinder；Depth ＜ 0.3mm small sized defects, using thousand
Impeller directly polishes reconditioning.Reconditioning should uniformly move about, and avoid the burning of reconditioning position, and reconditioning direction is along rolling direction, angle grinder, thousand
40 ~ 80# of impeller model.
Third step, cold rolling：Hot rolling titanium is rolled up and carries out cold rolling, cold rolling reduction is controlled in 5 ~ 60%, preferably 10 ~ 35%.Cold rolling
Purpose include (1) cold rolling after titanium volume surface roughness be down to 1 μm hereinafter, slightly being lacked convenient for step 5 small-medium size by 6 ~ 10 μ
Fall into sight check discovery and reconditioning removal；(2) by deflection to a certain degree, lose step 2 hot rolling titanium volume reconditioning rear surface
It leaks or does not repair net small sized defects and further show, removed convenient for step 5 sight check discovery and reconditioning；(3) hot rolling titanium is rolled up
The small oxidized residual point of visual finding is difficult to after ball blast pickling inside pit, surface is floated up to through cold rolling and crushes, so as to have
Surface oxidation is remained by ball blast pickling conducive to step 6 and tiny flaw further removes totally.
4th step, degreasing：Deoiling treatment is carried out to semi-finished product cold rolling coil in degreasing line.
5th step, semi-finished product reconditioning：Using 80 ~ 120# sized flap wheels, surface defect is rolled up to cold rolling semi-finished product along rolling direction
Carry out secondary check and reconditioning.
6th step, ball blast pickling：Ball blast pickling processes are carried out to the cold rolling semi-finished product volume after reconditioning.Use ball blast pickling height
Mode of working continuously is imitated, under mechanical dephosphorization and chemical attack stepless action, by the titanium slag of titanium volume figuring of surface adherency, disperse point
The preceding step of cloth is visually difficult to the microsize remained on surface defect that discovery and reconditioning is examined to remove and the thorough removal of oxidation point is dry
Only, product are rolled into so as to which defect be avoided to leave to cold rolled titanium band.
The titanium volume production cold rolled titanium band obtained using the above method is rolled into product, can significantly improve surface quality.
This patent reconditioning flow, method, in industry with originality, specifically include:A. first time reconditioning is arranged in heat
After rolling up ball blast pickling, surface-brightening is more easy to find and understand defect, and the prior art is after ball blast；B. for of different sizes
The defects of, it is removed using angle grinder, sized flap wheel integrated approach, efficiency and quality can be taken into account, it is good to size defect removal effect, it is right
The Chiba buff polishing after big defect angle grinder reconditioning can be greatly decreased titanium slag adherency, small defect sized flap wheel is directly polished, fire
It spends less, titanium slag not easy to stick；C adheres to titanium slag, Dispersed precipitate for titanium volume thinning surface, is visually difficult to that discovery and reconditioning is examined to remove
Microsize remained on surface defect and oxidation, thoroughly gone using ball blast pickling machinery dephosphorization after cold rolling and chemical corrosion method
Except (it explains inside specific embodiment and why so arranges, and these flow arrangements and the method prior art do not have；D. it is cold
It rolls the secondary reconditioning of semi-finished product to be necessary, it is possible to prevente effectively from a reconditioning defect omits problem.
The process of the present invention by multi-step, orderly defect removing step, can effectively, thoroughly to titanium band
The various defects on surface are removed.The processing class defect on hot rolling titanium strip coil surface can not only be eliminated, moreover it is possible to titanium base metallurgy
And surface defect and other issues progress improves simultaneously caused by production equipment.Meanwhile to the original production blank of titanium band without
Limitation.Thus greatly reduce production cost, strong applicability.Since titanium volume surface defect removal effect is good, this Shen is used
Please method prepare cold rolling titanium strip coil, can be substantially improved to titanium base and hot rolling titanium volume quality level and quality fluctuation adaptability.In mesh
Under the conditions of preceding country's titanium roll bending base prepares and rolls process unit and technical merit, it can just stablize and obtain surface yields >=90%,
More there is the cold rolled titanium band that can reach more than 95% to be rolled into product, solve that domestic cold rolling titanium strip coil surface quality is not high, yields is low
Technical bottleneck, this is most important to industrial mass steady production.
It is provided by the invention it is a kind of improve cold rolling titanium strip coil surface quality process, for titanium strip coil surface peeling,
The removal effect of the defects of press-in, oxidized residual and scuffing is good, can significantly improve cold rolled titanium band and be rolled into product surface quality, and stablize
Obtain the excellent cold rolling titanium strip coil of surface quality.The defects of in processing step for different type, scale and severity, design
Targetedly fault detection identification and removing step, it is achieved thereby that the best removal effect of titanium volume surface defect.
Embodiment 1
2.0mm specification TA2 cold rolled titanium bands roll standby
The first step, annealing ball blast pickling：Using continuous annealing ball blast pickling line, 6.0mm hot rollings titanium volume is annealed and deoxygenated
Change skin processing, acquisition surface is silvery white in color, uniform bright pickling state hot rolling titanium volume.
Second step, the volume reconditioning of hot rolling titanium：Uncoiling sight check and reconditioning, right >=0.3mm are larger-size medium and serious
Surface defect carries out reconditioning, then be polished with 60# sized flap wheels using 40# angle grinders；Depth ＜ 0.3mm small sized defects, are adopted
Reconditioning is directly polished with 60# sized flap wheels, and reconditioning is along rolling direction.
Third step, cold rolling：Hot rolling titanium is rolled up and carries out cold rolling, cold rolling reduction 12%, target thickness 5.3mm.
4th step, degreasing：Deoiling treatment is carried out to semi-finished product cold rolling coil in degreasing line.
5th step, semi-finished product reconditioning：Using 80# sized flap wheels, cold rolling semi-finished product volume surface defect is carried out along rolling direction
Secondary check and reconditioning.
6th step, ball blast pickling：Ball blast pickling processes are carried out to the cold rolling semi-finished product volume after reconditioning.
The processes such as follow-up cold rolling, annealing are carried out using above-mentioned 5.3mm titaniums volume to process, and are obtained 2.0mm cold rolled titanium bands and are rolled into product.
The surface yields of the titanium strip coil is 95% after measured, is shown in Table 1.
Comparative example 1
The volume production of hot rolling titanium, hot rolling titanium volume surface are carried out using the equipment such as slab melting same as Example 1, rolling and technology
Quality is equal.Ball blast machinery dephosphorization is carried out to hot rolling titanium volume surface, local reconditioning is carried out to surface defect, then carries out one
Secondary pickling and secondary ball blast pickling then carry out the processing of the processes such as cold rolling, annealing, obtain 2.0mm cold rolled titanium bands and are rolled into product, through surveying
The surface yields of the fixed titanium strip coil is 71%, is shown in Table 1.
Embodiment 2
1.0mm specification TA1 cold rolled titanium bands roll standby
The first step, annealing ball blast pickling：Using continuous annealing ball blast pickling line, 4.0mm hot rollings titanium volume is annealed and deoxygenated
Change skin processing, acquisition surface is silvery white in color, uniform bright pickling state hot rolling titanium volume.
Second step, the volume reconditioning of hot rolling titanium：Uncoiling sight check and reconditioning, right >=0.3mm are larger-size medium and serious
Surface defect carries out reconditioning, then be polished with 60# sized flap wheels using 60# angle grinders；Depth ＜ 0.3mm small sized defects, are adopted
Reconditioning is directly polished with 60# sized flap wheels, and reconditioning is along rolling direction.
Third step, cold rolling：Hot rolling titanium is rolled up and carries out cold rolling, cold rolling reduction 25%, target thickness 3.0mm.
4th step, degreasing：Deoiling treatment is carried out to semi-finished product cold rolling coil in degreasing line.
5th step, semi-finished product reconditioning：Using 100# sized flap wheels, cold rolling semi-finished product volume surface defect is carried out along rolling direction
Secondary check and reconditioning.
6th step, ball blast pickling：Ball blast pickling processes are carried out to the cold rolling semi-finished product volume after reconditioning.
The processes such as follow-up cold rolling, annealing are carried out using above-mentioned 3.0mm titaniums volume to process, and are obtained 1.0mm cold rolled titanium bands and are rolled into product,
The surface yields of the titanium strip coil is 96% after measured, is shown in Table 2.
Comparative example 2
The volume production of hot rolling titanium, hot rolling titanium volume surface are carried out using the equipment such as slab melting same as Example 2, rolling and technology
Quality is equal.After carrying out a ball blast pickling to hot rolling titanium volume surface, local reconditioning is carried out to surface defect, is then carried out secondary
Ball blast pickling then carries out cold rolling, the processing of the processes such as annealing, acquisition 1.0mm cold rolled titanium bands are rolled into product, after measured the titanium strip coil
Surface yields is 74%, is shown in Table 2.
Embodiment 3
0.5mm specification TA1 cold rolled titanium bands roll standby
The first step, annealing ball blast pickling：Using continuous annealing ball blast pickling line, 3.5mm hot rollings titanium volume is annealed and deoxygenated
Change skin processing, acquisition surface is silvery white in color, uniform bright pickling state hot rolling titanium volume.
Second step, the volume reconditioning of hot rolling titanium：Uncoiling sight check and reconditioning, right >=0.3mm are larger-size medium and serious
Surface defect carries out reconditioning, then be polished with 60# sized flap wheels using 60# angle grinders；Depth ＜ 0.3mm small sized defects, are adopted
Reconditioning is directly polished with 60# sized flap wheels, and reconditioning is along rolling direction.
Third step, cold rolling：Hot rolling titanium is rolled up and carries out cold rolling, cold rolling reduction 29%, target thickness 2.5mm.
4th step, degreasing：Deoiling treatment is carried out to semi-finished product cold rolling coil in degreasing line.
5th step, semi-finished product reconditioning：Using 120# sized flap wheels, cold rolling semi-finished product volume surface defect is carried out along rolling direction
Secondary check and reconditioning.
6th step, ball blast pickling：Ball blast pickling processes are carried out to the cold rolling semi-finished product volume after reconditioning.
The processes such as follow-up cold rolling, annealing are carried out using above-mentioned 2.5mm titaniums volume to process, and are obtained 0.5mm cold rolled titanium bands and are rolled into product,
The surface yields of the titanium strip coil is 98% after measured, is shown in Table 3.
Comparative example 3
The volume production of hot rolling titanium, hot rolling titanium volume surface are carried out using the equipment such as slab melting same as Example 3, rolling and technology
Quality is equal.After carrying out a ball blast pickling to hot rolling titanium volume surface, local reconditioning is carried out to surface defect, is then carried out secondary
Ball blast pickling then carries out cold rolling, the processing of the processes such as annealing, acquisition 1.0mm cold rolled titanium bands are rolled into product, after measured the titanium strip coil
Surface yields is 78%, is shown in Table 3.
1 cold rolling titanium strip coil surface quality of table compares statistical form
2 cold rolling titanium strip coil surface quality of table compares statistical form
3 cold rolling titanium strip coil surface quality of table compares statistical form
By table 1 ~ 3 as it can be seen that compared to embodiment 1 ~ 3, the embodiment of the present invention significantly improves cold rolling titanium strip coil surface quality, surface
Yields to 94 ~ 98% higher levels, and the cold rolling titanium strip coil cutting for preparing of embodiment for rejection rate after production board it is low, material rate
Height, product synthesis are at low cost.Comparative example 1 after hot rolling titanium rolls up ball blast, before pickling, carries out local reconditioning, gloomy, thick by surface
The big influence of rugosity, small size surface defect are difficult to by sight check discovery and reconditioning removal, the cold rolling titanium strip coil table subsequently prepared
Relatively low face yields is only 71%；Comparative example 2 ~ 3 carries out reconditioning after hot rolling titanium rolls up a ball blast pickling, although titanium volume table at this time
Face is bright, but is limited to the big reason of surface roughness, and the still easy missing inspection of small size surface defect is left to finished product, and surface is still
The defects of remaining more small size peeling, press-in, though yields is improved, still is below 80%.
More than titanium volume surface yields computational methods are " defect cumulative length/band rolls up total length ", and continuity defects are by scarce
It falls into physical length to calculate, be calculated at dispersed defect 1 by 0.5m.
The embodiment selected herein for the open purpose of the present invention, is presently considered to be suitable, but answers
Solution, the present invention is directed to include all changes and the improvement that all belong to this design and the embodiment in the scope of the invention.
Claims (5)
1. a kind of process for improving cold rolling titanium strip coil surface quality, which is characterized in that include the following steps：
Step 1: annealing ball blast pickling：Using continuous annealing ball blast pickling line, annealed to hot rolling titanium volume raw material and at least
Surface non-scale residual is made in ball blast pickling, is silvery white in color, uniform bright pickling state hot rolling titanium volume, spare；
Step 2: hot rolling titanium rolls up reconditioning：Pickling state hot rolling titanium volume made from step 1 is subjected to uncoiling inspection, hot rolling titanium is rolled up
The large scale defect of case depth >=0.3mm first carries out reconditioning using angle grinder, reuses sized flap wheel and carries out local polishing, right
In the small sized defects of hot rolling titanium volume case depth ＜ 0.3mm, directly it is polished using sized flap wheel；
Step 3: cold rolling：Hot rolling titanium volume after being polished to step 2 carries out cold-rolling treatment, and control cold rolling reduction is 5 ~ 60%, system
Cold rolled titanium band is obtained, it is spare；
Step 4: degreasing：On degreasing line, ungrease treatment is carried out to cold rolled titanium band made from step 3, degreasing titanium band is made, it is standby
With；
Step 5: semi-finished product reconditioning：Using the sized flap wheel of 80 ~ 120# models, along rolling direction to degreasing titanium made from step 4
With the progress secondary inspection of surface defect and polished reconditioning；
Step 6: ball blast pickling：Ball blast pickling processes are carried out again to the titanium band after step 5 reconditioning, that is, are completed to cold rolled titanium band
Roll up the improvement of surface quality.
2. a kind of process for improving cold rolling titanium strip coil surface quality according to claim 1, it is characterised in that：It is described
In step 1, the number of ball blast pickling is once or twice.
3. a kind of process for improving cold rolling titanium strip coil surface quality according to claim 1, it is characterised in that：In step
In rapid two, rolling direction that the angle grinder carries out reconditioning and sized flap wheel is polished direction is rolled up along hot rolling titanium, and angle
The reconditioning of grinding machine and the polishing action of sized flap wheel are uniformly to move about at hot rolling titanium volume surface defect.
4. a kind of process for improving cold rolling titanium strip coil surface quality according to claim 1, it is characterised in that：In step
In rapid two, the model of the angle grinder and sized flap wheel is 40 ~ 80#.
5. a kind of process for improving cold rolling titanium strip coil surface quality according to claim 1, it is characterised in that：In step
In rapid three, the cold rolling reduction 10 ~ 35%.
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| CN109055710A (en) * | 2018-09-29 | 2018-12-21 | 成都先进金属材料产业技术研究院有限公司 | The surface treatment method of hot rolling titanium volume |
| CN109623528A (en) * | 2018-11-29 | 2019-04-16 | 江苏圣珀新材料科技有限公司 | A kind of online grinding method applied to titanium alloy strip |
| CN111014289A (en) * | 2019-11-27 | 2020-04-17 | 西安庄信新材料科技有限公司 | Titanium strip coil cold rolling production method |
| CN111842527A (en) * | 2020-06-24 | 2020-10-30 | 江苏圣珀新材料科技有限公司 | Cold rolling process for LNG liquefied injection ship plate 4J36 |
| CN113976669A (en) * | 2021-10-26 | 2022-01-28 | 首钢京唐钢铁联合有限责任公司 | Method for repairing surface defects of hot-rolled strip steel |
| CN114589213A (en) * | 2022-03-09 | 2022-06-07 | 新疆湘润新材料科技有限公司 | Preparation method of ultrathin titanium strip for hydrogen fuel cell bipolar plate |
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| CN116020896A (en) * | 2023-02-03 | 2023-04-28 | 湖南湘投金天钛金属股份有限公司 | Method for improving surface microscopic morphology of titanium strip coil |
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| CN115369411A (en) * | 2021-10-25 | 2022-11-22 | 塞尔纳新材料(武汉)有限公司 | Environment-friendly surface cleaning process for cold-rolled titanium and titanium alloy plates |
| CN115369411B (en) * | 2021-10-25 | 2023-08-18 | 塞尔纳新材料(武汉)有限公司 | Environment-friendly surface cleaning process for cold-rolled titanium and titanium alloy plates |
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| CN113976669B (en) * | 2021-10-26 | 2024-07-30 | 首钢京唐钢铁联合有限责任公司 | Repairing method for surface defects of hot-rolled strip steel |
| CN114589213A (en) * | 2022-03-09 | 2022-06-07 | 新疆湘润新材料科技有限公司 | Preparation method of ultrathin titanium strip for hydrogen fuel cell bipolar plate |
| CN114589213B (en) * | 2022-03-09 | 2023-11-24 | 新疆湘润新材料科技有限公司 | Preparation method of ultrathin titanium strip for bipolar plate of hydrogen fuel cell |
| CN116020896A (en) * | 2023-02-03 | 2023-04-28 | 湖南湘投金天钛金属股份有限公司 | Method for improving surface microscopic morphology of titanium strip coil |
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