CN204959000U - Compound steel band continuous annealing pickling system of hot rolling stainless steel - Google Patents
Compound steel band continuous annealing pickling system of hot rolling stainless steel Download PDFInfo
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- CN204959000U CN204959000U CN201520497058.1U CN201520497058U CN204959000U CN 204959000 U CN204959000 U CN 204959000U CN 201520497058 U CN201520497058 U CN 201520497058U CN 204959000 U CN204959000 U CN 204959000U
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping
Abstract
The utility model discloses a compound steel band continuous annealing pickling system of hot rolling stainless steel, include by preceding after to in proper order the decoiler, straightening machine, the crop end that set up of cooperation cut, MIG argon arc automatic welding machine, preceding loop, continuous annealing furnace, straightening machine, shot -blasting machine, the pickling of shallow slot turbulent flow formula, levelling machine, back loop, cut and cut and the coiling machine. The decoiler is 2, and the straightening machine is 2, and 2 are cut to the crop end, and the shot -blasting machine is 4, and the descaling bath is 6, and the coiling machine is 1. Adopt the utility model discloses production efficiency is high, and properties of product and surface quality are stable, and the product can satisfy customer's requirement, and the processing cost is low, has stronger market competition.
Description
Technical field
The utility model relates to a kind of hot-rolled stainless steel composite steel band continuous annealing pickling system.
Background technology
Stainless steel composite band is base material with carbon steel, take stainless steel as cover material, and not only having stainless erosion resistance, have the good physical strength of carbon steel and processing characteristics again, is novel Industrial products.Stainless steel composite band be widely used in oil, chemical industry, salt industry, hydraulic and electric engineering, etc. industry.As a kind of product of resource-conserving, reduce the consumption of noble metal, significantly reduce construction costs.Realize low cost and high performance perfect adaptation, have good social benefit.
The stainless steel Steel Mill of applicant has produced qualified 06Cr19Ni10+SPHC+06Cr19Ni10 hot-rolled stainless steel composite steel band by the mode of " stove volume+tandem rolling ", coating stainless steel thickness 0.3-0.5mm.In order to extension product scope, obtain the white skin coil of strip of batch, need the stainless steel composite band after to hot rolling to carry out annealing and pickling, obtain the white skin volume that surface quality is good.
Table 106Cr19Ni10/SPHC chemical composition
Chinese patent CN94110744.2 discloses a kind of stainless steel and carbon steel composite plate pickle solution and acid cleaning process system, it is characterized in that the chemical constitution of pickle solution mainly comprises sulfuric acid, nitric acid, hydrochloric acid, hydrofluoric acid, nonionogenic tenside, urotropine etc.During use, one step cleanup acid treatment can arrive stainless steel clad plate surface scale and activates, loosens, removes clean object.
Chinese patent CN200810097446.5 discloses a kind of stainless steel clad plate spray pickling, polishing, the method for passivation and device, it is characterized in that: stainless steel clad plate cladding slant setting upward, baffle plate leading screw is fixed on stainless steel clad plate surrounding, is formed spray system by acid proof pump, tubing, valve, sparge pipe pickling, chemical rightenning, Passivation Treatment are carried out to stainless steel clad plate.Above method carries out pickling mainly for stainless steel clad plate, and its shortcoming is that production efficiency is low, can not realize continuous annealing and pickling function, and after pickling, plate complexion difference is serious, and template can not get ensureing, acid wash passivation liquid proportioning is complicated.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of hot-rolled stainless steel composite steel band continuous annealing pickling system is provided, adopt this technology, production efficiency is high, product performance and surface quality are stablized, product can meet the requirement of client, and tooling cost is low, has the stronger market competitiveness.
For achieving the above object, the utility model adopts following technical proposals:
A kind of hot-rolled stainless steel composite steel band continuous annealing pickling system, comprises that the Abrollhaspel, straightener, the crop end that are equipped with successively are from front to back cut, MIG argon arc welding machine, front kink, continuous annealing furnace, straightener, shot-blasting machine, the pickling of shallow slot turbulent flow type, levelling machine, rear kink, cuts and cut and reeling machine.
Described Abrollhaspel is 2,2, straightener, and crop end cuts 2, shot-blasting machine 4, pickling tank 6, reeling machine 1.
Described straightener is nine rollers, and descaling mill is a curved aligning.
A kind of hot-rolled stainless steel composite steel band continuous annealing acid washing method, comprises the following steps:
1) uncoiling welding, by qualified hot-rolled stainless steel composite steel band coil of strip first by Abrollhaspel uncoiling, crop after straightener aligning, welds through the afterbody of MIG argon welder with last steel band; Described coil of strip weight≤33 ton, diameter≤2100mm, welding wire is ER304, diameter 1.6mm, and protection gas adopts the oxygen of 98% argon gas+2%;
2) anneal, the stainless steel composite band after step 1) being welded delivers into front kink, then enters continuous annealing furnace through tensioning device, annealing furnace TV value≤200, P3 plate temperature 1040-1060 DEG C;
3) scale breading ball blast, by step 2) annealing after stainless steel composite band after descaling mill, enter shot-blasting machine de-scaling; Shot-blasting machine adopts a curved aligning, unit elongation < 1.5%, and shot-blasting machine drops into 2 groups, ramming head electric current 90-100A;
4) intermediates of step 3) are entered pickling tank and carry out pickling by pickling; Pickling is divided into sulfuric acid section, nitration mixture I section and nitration mixture II section;
5) smoothly to batch, after pickling stainless steel composite band enter after smooth after kink, then batch through reeling machine, weld seam position is undertaken cutting excision by cutting to cut; Levelling machine unit elongation 0.6%-3%, reeling machine maximum tension 25t.
Three sections of pickling parameters in described step 4) are as follows:
The equipment such as the Abrollhaspel in the utility model, shot-blasting machine, reeling machine, can buy in the market, not repeat them here.
Hot-rolled stainless steel composite steel band annealing and pickling method continuity of the present utility model is strong, and pickling effect is obvious, and product can meet the requirement of client, has the stronger market competitiveness.
Smooth in order to ensure the steel band template after uncoiling, general producer all adopts three roller aligning or five-roll machines, and the factory of applicant uses nine roller straighteners according to self productive prospecting, top roll Electro-pressing, and whole process comes into operation, and effect is ideal.
Welding set is domestic 800-1600mm argon welder, ensures that band steel can weld the composite steel band of 2-12.7mm, realizes single-side welding double-side forming, can realize self-centering in welding process.
Continuous annealing furnace adopts horizontal chamber oven, and heating adopts NOx burner open firing mode, and multistage non-oxidation Combustion System, reduces oxidization burning loss to greatest extent.Cooling section adopts 1 grade of air cooling, and 2 grades of aerosols are cold, the type of cooling of 3 grades of water-cooleds, can guarantee the solution treatment of all types of stainless steel composite band; Fuel uses the coke-oven gas of purification, and production cost is reduced greatly.
Adopt the descaling mill of a curved aligning to produce, both can guarantee that the composite bed of composite steel band is not destroyed, can ensure that again surface scale is loose and template is good, descaling mill straightening roll diameter 75mm.
Pickling section is the pickling of shallow slot turbulent flow type, and roller brush system is superpower washing device, and the dirt settling of band steel through overpickling rear surface can effectively be removed.Pickling cell body arranges bottom and is communicated with the mode overflowing back acid, reduces sedimentary accumulation in work nest.
Levelling machine is four-roller type, arranges online roll changing system.Unit elongation 0.6%-3%, can reach the specification of quality of stainless steel composite band different mass grade.Below 6.0mm meets unit elongation and eliminates yield point elongation, and more than 6.0mm meets elimination yield point elongation.
Adopt this technology, production efficiency is high, and product performance and surface quality are stablized, and product can meet the requirement of client, and tooling cost is low, has the stronger market competitiveness.
Accompanying drawing explanation
Fig. 1 is the utility model system process schematic diagram;
Wherein 1, Abrollhaspel; 2, straightener; 3, crop end is cut; 4, MIG argon welder; 5, front kink; 6, continuous annealing furnace; 7, descaling mill; 8, shot-blasting machine; 9, shallow slot turbulent flow type pickling; 10, levelling machine; 11, rear kink; 12, cut and cut; 13, reeling machine.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, stainless steel composite band annealing and pickling system, comprises the Abrollhaspel 1 set gradually from front to back; Straightener 2; Crop end cuts 3; MIG argon welder 4; Front kink 5; Continuous annealing furnace 6; Descaling mill 7; Shot-blasting machine 8; Shallow slot turbulent flow type pickling 9; Levelling machine 10; Rear kink 11; Cut and cut 12; Reeling machine 13.Described straightener is nine rollers, and descaling mill is a curved aligning.Abrollhaspel is 2,2, straightener, and crop end cuts 2, shot-blasting machine 4, pickling tank 6, reeling machine 1.
Embodiment 1:
Pickling steel band specification to be annealed (thickness * width): 2.95 × 1240mm.
Annealing and pickling by the following method:
Welding: coil of strip sends into the welding of MIG argon welder after uncoiling, aligning, crop, welding current 135A, welding speed 600mm/min.
Annealing temperature: P3 plate temperature 1057 DEG C, TV value 130.
Mechanical descaling: descaling mill draught, bending roll 70mm, straightening roll 75mm, 2 16 each ramming heads left by shot-blasting machine, ramming head electric current 100A.
Pickling temperature and concentration control: sulfuric acid section: concentration 237.1g/l, metal concentration 46.2g/l, temperature 81 DEG C; Nitration mixture I section: concentration of nitric acid 132.5g/l, hydrofluoric acid concentration 38.3g/l, metal concentration 46.5g/l, temperature 57.9 DEG C; Nitration mixture II section: concentration of nitric acid 113.5g/l, hydrofluoric acid concentration 33.2g/l, metal concentration 42.7g/l, temperature 58.1 DEG C.
Levelling machine unit elongation 0.75%, coil of strip batches packaging and warehousing through reeling machine.
Embodiment 2:
Pickling steel band specification to be annealed (thickness * width): 3.0 × 1240mm.
Annealing and pickling by the following method:
Welding: coil of strip sends into the welding of MIG argon welder after uncoiling, aligning, crop, welding current 150A, welding speed 550mm/min.
Annealing temperature: P3 plate temperature 1051 DEG C, TV value 125.
Mechanical descaling: descaling mill draught, bending roll 75mm, straightening roll 80mm, 2 16 each ramming heads left by shot-blasting machine, ramming head electric current 100A.
Sulfuric acid section: concentration 218.4g/l, metal concentration 47.5g/l, temperature 80 DEG C; Nitration mixture I section: concentration of nitric acid 130.8g/l, hydrofluoric acid concentration 36.1g/l, metal concentration 47.9g/l, temperature 58.0 DEG C; Nitration mixture II section: concentration of nitric acid 109.7g/l, hydrofluoric acid concentration 30.4g/l, metal concentration 43.3g/l, temperature 56.3 DEG C.
Levelling machine unit elongation 0.8%, coil of strip is packaging and warehousing after reeling machine batches.
Embodiment 3:
Pickling steel band specification to be annealed (thickness * width): 3.75 × 1240mm.
Annealing and pickling by the following method:
Welding: coil of strip sends into the welding of MIG argon welder after uncoiling, aligning, crop, welding current 175A, welding speed 500mm/min.
Annealing temperature: P3 plate temperature 1048 DEG C, TV value 112.
Mechanical descaling: descaling mill draught, bending roll 80mm, straightening roll 85mm, 2 16 each ramming heads left by shot-blasting machine, ramming head electric current 95A.
Sulfuric acid section: concentration 210.5g/l, metal concentration 45.1g/l, temperature 80 DEG C; Nitration mixture I section: concentration of nitric acid 122.6g/l, hydrofluoric acid concentration 33.5g/l, metal concentration 41.9g/l, temperature 57.5 DEG C; Nitration mixture II section: concentration of nitric acid 109.8g/l, hydrofluoric acid concentration 28.4g/l, metal concentration 40.1g/l, temperature 60.1 DEG C.
Levelling machine unit elongation 0.9%, coil of strip is packaging and warehousing after reeling machine batches.
Hot-roll annealing pickling of stainless steel composition board salient features
| Mechanical property | Elongation after fracture A/% | Yield strength Rel(Mpa) | Tensile strength Rm(Mpa) | Synthetic determination |
| Example 1 | 49 | 305 | 406 | Qualified |
| Example 2 | 46 | 310 | 385 | Qualified |
| Example 3 | 50 | 298 | 392 | Qualified |
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (2)
1. a hot-rolled stainless steel composite steel band continuous annealing pickling system, it is characterized in that, comprise that the Abrollhaspel, straightener, the crop end that are equipped with successively are from front to back cut, MIG argon arc welding machine, front kink, continuous annealing furnace, straightener, shot-blasting machine, the pickling of shallow slot turbulent flow type, levelling machine, rear kink, cut and cut and reeling machine; Described Abrollhaspel is 2,2, straightener, and crop end cuts 2, shot-blasting machine 4, pickling tank 6, reeling machine 1; Described descaling mill is a curved aligning.
2. hot-rolled stainless steel composite steel band continuous annealing pickling system as claimed in claim 1, it is characterized in that, described straightener is nine rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520497058.1U CN204959000U (en) | 2015-07-11 | 2015-07-11 | Compound steel band continuous annealing pickling system of hot rolling stainless steel |
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| CN201520497058.1U CN204959000U (en) | 2015-07-11 | 2015-07-11 | Compound steel band continuous annealing pickling system of hot rolling stainless steel |
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| CN204959000U true CN204959000U (en) | 2016-01-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002348A (en) * | 2015-07-11 | 2015-10-28 | 山东泰山钢铁集团有限公司 | Continuous annealing acid pickling system and method for hot rolling stainless steel composite steel belt |
| CN111188068A (en) * | 2020-01-17 | 2020-05-22 | 肇庆宏旺金属实业有限公司 | Black titanium plating method for whole roll of stainless steel |
| CN112029984A (en) * | 2020-08-13 | 2020-12-04 | 山东泰山钢铁集团有限公司 | Method for producing TSCr9LP stainless steel in continuous pickling line |
| CN112779548A (en) * | 2020-12-27 | 2021-05-11 | 山东盛阳金属科技股份有限公司 | 300-series stainless steel plate pickling system and pickling process thereof |
-
2015
- 2015-07-11 CN CN201520497058.1U patent/CN204959000U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002348A (en) * | 2015-07-11 | 2015-10-28 | 山东泰山钢铁集团有限公司 | Continuous annealing acid pickling system and method for hot rolling stainless steel composite steel belt |
| CN111188068A (en) * | 2020-01-17 | 2020-05-22 | 肇庆宏旺金属实业有限公司 | Black titanium plating method for whole roll of stainless steel |
| CN112029984A (en) * | 2020-08-13 | 2020-12-04 | 山东泰山钢铁集团有限公司 | Method for producing TSCr9LP stainless steel in continuous pickling line |
| CN112779548A (en) * | 2020-12-27 | 2021-05-11 | 山东盛阳金属科技股份有限公司 | 300-series stainless steel plate pickling system and pickling process thereof |
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Effective date of registration: 20200730 Granted publication date: 20160113 |
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Date of cancellation: 20230730 Granted publication date: 20160113 |
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