CN113172980B - Preparation method of stainless steel/carbon steel composite sheet strip - Google Patents
Preparation method of stainless steel/carbon steel composite sheet strip Download PDFInfo
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 131
- 239000010935 stainless steel Substances 0.000 title claims abstract description 131
- 229910000975 Carbon steel Inorganic materials 0.000 title claims abstract description 114
- 239000010962 carbon steel Substances 0.000 title claims abstract description 114
- 239000002131 composite material Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000013329 compounding Methods 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 21
- 238000005498 polishing Methods 0.000 claims abstract 12
- 229910000831 Steel Inorganic materials 0.000 claims description 64
- 239000010959 steel Substances 0.000 claims description 64
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 47
- 238000000227 grinding Methods 0.000 claims description 35
- 239000010963 304 stainless steel Substances 0.000 claims description 33
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 33
- 230000009467 reduction Effects 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims 3
- 230000008569 process Effects 0.000 abstract description 11
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 description 8
- 238000005253 cladding Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 238000005097 cold rolling Methods 0.000 description 6
- 239000002360 explosive Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
- B32B2038/0016—Abrading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
- B32B2038/0048—Annealing, relaxing
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Abstract
Description
技术领域technical field
本发明属于金属层状复合材料制备技术领域，具体涉及一种不锈钢/碳钢复合薄板带材制备方法，特别适合于低成本高效地制备大尺寸大卷重的不锈钢/碳钢复合薄板带材。The invention belongs to the technical field of preparation of metal layered composite materials, in particular to a method for preparing stainless steel/carbon steel composite sheet strips, which is particularly suitable for low-cost and high-efficiency preparation of stainless steel/carbon steel composite sheet strips of large size and heavy coil weight.
背景技术Background technique
不锈钢/碳钢(包括不锈钢/碳钢/不锈钢)复合薄板带材兼具不锈钢的耐腐蚀性、耐磨性、抗磁性和装饰性等优点以及碳钢的低成本、力学性能优良、易焊接和导热性好等优点，是一种综合性能优异的结构-功能一体化材料，在建筑、船舶、交通、化工、日常生活和国防军工等领域应用广泛。Stainless steel/carbon steel (including stainless steel/carbon steel/stainless steel) composite thin plate and strip has the advantages of corrosion resistance, wear resistance, antimagnetic and decorative properties of stainless steel and low cost, excellent mechanical properties, easy welding and With the advantages of good thermal conductivity and other advantages, it is a structure-function integrated material with excellent comprehensive performance. It is widely used in the fields of construction, shipbuilding, transportation, chemical industry, daily life and national defense and military industry.
目前，工业上主要采用爆炸复合法或热轧复合法制备不锈钢/碳钢复合板带坯，再经后续热轧或冷轧制备不锈钢/碳钢复合薄板带材。At present, the industry mainly adopts explosive cladding method or hot rolling cladding method to prepare stainless steel/carbon steel clad strip blanks, and then prepares stainless steel/carbon steel clad sheet strips by subsequent hot rolling or cold rolling.
爆炸复合法是利用炸药爆炸产生的冲击力，使不锈钢板坯与碳钢板坯发生高速碰撞，在不锈钢与碳钢的待复合界面实现冶金结合。但是，爆炸复合法不仅存在能量消耗大、环境污染严重、工序繁杂、生产效率低和产品成本高等问题，而且无法连续化生产大尺寸大卷重不锈钢/碳钢复合板带坯。热轧复合法在热轧复合前，需要进行繁琐的制坯工序。热轧复合法具体工艺流程可简述为不锈钢板带坯和碳钢板带坯待复合表面机械打磨→按照不锈钢/碳钢(或碳钢/不锈钢/隔离剂/不锈钢/碳钢)顺序组坯→组坯四周焊接、抽真空密封→加热→热轧复合→获得不锈钢/碳钢复合板带坯。繁琐的制坯工序导致热轧复合法存在工艺流程长、工艺不连续等问题，焊接及抽真空的效果也严重影响不锈钢/碳钢复合板带坯的成材率。Explosive compounding method is to use the impact force generated by explosive explosion to make stainless steel slab and carbon steel slab collide at high speed, and realize metallurgical bonding at the interface to be compounded between stainless steel and carbon steel. However, the explosive cladding method not only has problems such as large energy consumption, serious environmental pollution, complicated procedures, low production efficiency, and high product cost, but also cannot continuously produce large-size, heavy-coil, and heavy-weight stainless steel/carbon steel clad strip blanks. The hot-rolling cladding method requires a cumbersome blank-making process before the hot-rolling cladding. The specific process flow of the hot-rolling composite method can be briefly described as stainless steel strip blank and carbon steel strip blank to be composited surface mechanically polished → according to the sequence of stainless steel/carbon steel (or carbon steel/stainless steel/separator/stainless steel/carbon steel) → Welding around the billets, vacuuming and sealing → heating → hot rolling and compounding → obtaining stainless steel/carbon steel clad strip blanks. The cumbersome billet making process leads to problems such as long process flow and discontinuous process in the hot rolling clad method. The effect of welding and vacuuming also seriously affects the yield of stainless steel/carbon steel clad slab.
通过分析，申请人发现现有技术主要包括以下方案：Through analysis, the applicant found that the prior art mainly includes the following solutions:
1、对不锈钢板带坯和碳钢板带坯开卷、矫直→氩弧焊接带→不锈钢和碳钢的待复合表面在线打磨毛化→保护氦气气氛条件下于700～750℃加热→保护氦气气氛条件下温轧复合→在线加热扩散及固溶处理→拉伸矫直→获得不锈钢/碳钢/不锈钢复合板带。该方法采用在氦气保护气氛下加热并温轧，实现不锈钢/碳钢复合，再通过后续加热扩散及固溶处理，提高界面结合强度。该方法由于采用了氦气保护气氛加热及温轧，制备条件严苛，同时温轧的不锈钢/碳钢结合强度不高，后续加热扩散及固溶处理也难以显著提高不锈钢/碳钢的界面结合强度。该方法存在工艺流程长、生产成本高和不锈钢/碳钢界面结合强度不高等问题。1. Uncoiling and straightening of stainless steel and carbon steel strip blanks → argon arc welding strip → online grinding and roughening of stainless steel and carbon steel surfaces to be combined → heating at 700-750°C under protective helium atmosphere → protection of helium Warm rolling and compounding under air atmosphere conditions → on-line heating diffusion and solution treatment → stretching and straightening → obtaining stainless steel/carbon steel/stainless steel clad strips. The method adopts heating and warm rolling under a helium protective atmosphere to realize stainless steel/carbon steel composite, and then through subsequent heating diffusion and solid solution treatment, the interface bonding strength is improved. Due to the use of helium protective atmosphere heating and warm rolling in this method, the preparation conditions are harsh. At the same time, the bonding strength of the warm-rolled stainless steel/carbon steel is not high, and subsequent heating, diffusion and solution treatment are also difficult to significantly improve the interface bonding of stainless steel/carbon steel. strength. The method has the problems of long process flow, high production cost, low bonding strength of the stainless steel/carbon steel interface, and the like.
2、对不锈钢板带坯和碳钢板带坯表面清洗→不锈钢和碳钢待复合表面机械打磨→按照不锈钢/碳钢/不锈钢顺序组成不锈钢/碳钢/不锈钢复合坯→在室温下通过高压冷轧机一次成形→加热扩散退火处理→精轧→软化退火→平整矫直→获得不锈钢/碳钢复合板。该方法在室温下采用高压冷轧机大压下冷轧复合，再通过后续加热扩散退火处理实现不锈钢/碳钢冶金结合。不锈钢/碳钢在室温条件下的冷轧复合难度大，对轧机能力要求非常高，且界面主要为机械结合，界面结合强度低，在后续搬运过程中极易发生脆性分层，加热扩散退火后界面结合强度仍然不够高，成材率也较低。2. Clean the surface of stainless steel strip blank and carbon steel strip blank → mechanically polish the surface of stainless steel and carbon steel to be composited → form stainless steel/carbon steel/stainless steel composite blank according to the sequence of stainless steel/carbon steel/stainless steel → pass high-pressure cold rolling at room temperature Machine one-time forming→heating diffusion annealing treatment→finish rolling→softening annealing→levelling and straightening→obtain stainless steel/carbon steel composite plate. In the method, a high-pressure cold rolling mill is used at room temperature to perform cold rolling and compounding under a large pressure, and then the stainless steel/carbon steel metallurgical combination is realized through subsequent heating and diffusion annealing treatment. Stainless steel/carbon steel is difficult to cold-roll and compound at room temperature, and requires very high capacity of the rolling mill, and the interface is mainly mechanically bonded, and the interface bond strength is low. Brittle delamination is very easy to occur in the subsequent handling process. After heating and diffusion annealing The interfacial bonding strength is still not high enough, and the finished product rate is also low.
因此，针对目前不锈钢/碳钢复合薄板带材制备方法存在的上述问题，有必要开发一种低成本、高效率制备大尺寸大卷重的不锈钢/碳钢复合薄板带材的新方法。Therefore, in view of the above-mentioned problems in the current preparation methods of stainless steel/carbon steel composite sheet and strip, it is necessary to develop a low-cost, high-efficiency new method for preparing stainless steel/carbon steel composite sheet and strip with large size and heavy coil weight.
发明内容Contents of the invention
本发明的目的是提供一种不锈钢/碳钢复合薄板带材的制备方法，其特征在于，通过将在空气氛围下加热进行的预轧制复合与终轧制复合相结合的工艺，在无需真空、还原性气氛或保护性气氛下实现不锈钢与碳钢之间的高强度冶金结合，低成本高效制备出不锈钢/碳钢复合薄板带材，特别适合于制备大尺寸大卷重的不锈钢/碳钢复合薄板带材。The purpose of this invention is to provide a kind of preparation method of stainless steel/carbon steel clad sheet strip, it is characterized in that, by the technology that the pre-rolling cladding that is heated under air atmosphere is combined with final rolling cladding, without vacuum , reducing atmosphere or protective atmosphere to achieve high-strength metallurgical bonding between stainless steel and carbon steel, low-cost and high-efficiency preparation of stainless steel/carbon steel composite thin strips, especially suitable for the preparation of stainless steel/carbon steel with large size and heavy coil weight Composite sheet and strip.
根据本发明的一种不锈钢/碳钢复合薄板带材的制备方法，包括如下步骤：A kind of preparation method of stainless steel/carbon steel composite sheet strip according to the present invention, comprises the steps:
步骤1：分别对不锈钢板带坯和碳钢板带坯在空气氛围中进行软化退火；Step 1: performing softening annealing on the stainless steel strip blank and the carbon steel strip blank in air atmosphere;
步骤2：分别对所述不锈钢板带坯和所述碳钢板带坯的待复合表面进行机械打磨，形成的打磨条纹方向垂直于所述不锈钢板带坯和所述碳钢板带坯的长度方向，接着按照不锈钢/碳钢(或不锈钢/碳钢/不锈钢)的顺序层叠组坯，获得不锈钢/碳钢层状坯料，将所述不锈钢/碳钢层状坯料在空气氛围中进行加热，加热温度为150～600℃、保温时间为0.05～30min，促进所述不锈钢板带坯和所述碳钢板带坯的待复合表面原子活化，同时避免了所述不锈钢板带坯和所述碳钢板带坯的待复合表面发生过量氧化，紧跟着将加热后的所述不锈钢/碳钢层状坯料进行预轧制复合，获得不锈钢/碳钢预复合板带坯，预轧制复合压下率为≥40％，使所述不锈钢/碳钢层状坯料的待复合表面实现部分冶金结合，增加所述不锈钢/碳钢预复合板带坯的抗分层能力，避免所述不锈钢/碳钢预复合板带坯在后续加工过程中分层；Step 2: Mechanically grinding the surfaces of the stainless steel strip blank and the carbon steel strip blank to be compounded respectively, the direction of the grinding stripes formed is perpendicular to the length direction of the stainless steel strip blank and the carbon steel strip blank, Then stack the blanks in the order of stainless steel/carbon steel (or stainless steel/carbon steel/stainless steel) to obtain the stainless steel/carbon steel layered blank, and the stainless steel/carbon steel layered blank is heated in an air atmosphere at a heating temperature of 150-600°C, the holding time is 0.05-30min, to promote the activation of surface atoms to be recombined between the stainless steel strip and the carbon steel strip, and at the same time avoid the stainless steel strip and the carbon steel strip After the composite surface is excessively oxidized, the heated stainless steel/carbon steel layered billet is followed by pre-rolling and compounding to obtain a stainless steel/carbon steel pre-composite strip blank, and the pre-rolling composite reduction rate is ≥40 %, make the surface to be compounded of the stainless steel/carbon steel layered blank realize partial metallurgical bonding, increase the anti-delamination ability of the stainless steel/carbon steel pre-composite strip blank, and avoid the stainless steel/carbon steel pre-composite strip Blanks are delaminated during subsequent processing;
步骤3：对所述不锈钢/碳钢预复合板带坯在空气氛围中进行加热，紧接着将加热后的所述不锈钢/碳钢预复合板带坯进行终轧制复合，获得不锈钢/碳钢复合薄板带材，终轧制复合压下率为10％～50％，使所述不锈钢/碳钢复合薄板带材的复合界面实现高强度冶金结合。Step 3: heating the stainless steel/carbon steel pre-clad slab in air atmosphere, and then performing final rolling and compounding of the heated stainless steel/carbon steel pre-clad slab to obtain stainless steel/carbon steel For the composite thin plate and strip material, the final rolling composite reduction rate is 10% to 50%, so that the composite interface of the stainless steel/carbon steel composite thin plate and strip material can realize high-strength metallurgical bonding.
进一步的，所述不锈钢板带坯包括但不限于304不锈钢板带坯或316不锈钢板带坯中的至少一种，所述碳钢板带坯包括但不限于Q235钢板带坯或Q345钢板带坯中的至少一种。Further, the stainless steel strip includes but not limited to at least one of 304 stainless steel strip or 316 stainless steel strip, and the carbon steel strip includes but not limited to Q235 steel strip or Q345 steel strip at least one of .
进一步的，所述不锈钢板带坯和所述碳钢板带坯同时是单张形式的或成卷形式的。Further, the stainless steel strip blank and the carbon steel strip blank are both in sheet form or coil form.
进一步的，所述机械打磨为离线机械打磨或在线机械打磨，包括但不限于砂带打磨、砂轮打磨、磨轮打磨、钢丝刷打磨、百叶片打磨或激光打磨中的至少一种。Further, the mechanical grinding is offline mechanical grinding or online mechanical grinding, including but not limited to at least one of abrasive belt grinding, grinding wheel grinding, grinding wheel grinding, wire brush grinding, louver grinding or laser grinding.
进一步的，所述层叠组坯为离线层叠组坯或在线层叠组坯。Further, the stacked blanks are offline stacked blanks or online stacked blanks.
进一步的，所述加热为离线加热或在线加热，在真空、还原性气氛或保护性气氛中进行。Further, the heating is off-line heating or on-line heating, and is carried out in vacuum, reducing atmosphere or protective atmosphere.
进一步的，所述不锈钢/碳钢复合薄板带材是2～10层的不锈钢/碳钢层状复合薄板带材或不锈钢/碳钢/不锈钢层状复合薄板带材。Further, the stainless steel/carbon steel composite thin plate strip is a stainless steel/carbon steel layered composite thin plate strip or a stainless steel/carbon steel/stainless steel layered composite thin plate strip with 2 to 10 layers.
进一步的，所述不锈钢/碳钢复合薄板带材可以进行后续加热、矫直和精轧。Further, the stainless steel/carbon steel composite thin plate and strip can be subjected to subsequent heating, straightening and finish rolling.
进一步的，步骤1中，所述不锈钢板带坯的软化退火制度是950～1100℃保温1～3h后空冷，所述碳钢板带坯的软化退火制度是880～910℃保温1～3h后炉冷，满足轧制时的硬度匹配要求。Further, in
进一步的，步骤3中，加热温度为950～1300℃、保温时间为0.05～30min。Further, in
本发明的主要优点在于：The main advantages of the present invention are:
(1)采用该方法，能够直接制备出不锈钢/碳钢复合薄板带材，有效减少了从传统厚规格不锈钢/碳钢复合板带坯制备不锈钢/碳钢复合薄板带材的原材料消耗，节约了能源，降低了对轧制设备的高要求，减轻了复合界面金属间化合物的产生，提高了界面结合强度。(1) This method can directly prepare stainless steel/carbon steel composite sheet and strip, effectively reducing the consumption of raw materials for preparing stainless steel/carbon steel composite sheet and strip from traditional thick gauge stainless steel/carbon steel composite sheet and strip, saving Energy, reducing the high requirements for rolling equipment, reducing the generation of intermetallic compounds at the composite interface, and improving the interface bonding strength.
(2)采用该方法，在较低温度150～600℃短时加热后进行预轧制复合，实现了不锈钢板带坯与碳钢板带坯预复合，取代了传统真空或保护性气氛条件下进行不锈钢/碳钢组坯、焊接抽真空密封制坯或爆炸复合制坯工序，简化并缩短了工艺流程，提高了制坯的成材率；同时较传统室温冷轧复合制备不锈钢/碳钢预复合板带坯，能在降低轧制力的同时，使不锈钢/碳钢界面实现部分冶金结合，进而提高不锈钢/碳钢预复合板带坯的抗脆性分层能力，提高成材率。(2) Using this method, pre-rolling and compounding are carried out after short-term heating at a lower temperature of 150-600 ° C, realizing the pre-compositing of stainless steel strip blanks and carbon steel strip blanks, replacing the traditional vacuum or protective atmosphere conditions. Stainless steel/carbon steel billet assembly, welding, vacuum sealing billet making or explosive composite billet making process simplifies and shortens the process flow and improves the yield of billet making; at the same time, compared with the traditional room temperature cold rolling compound preparation of stainless steel/carbon steel pre-clad plate The strip blank can achieve partial metallurgical bonding at the stainless steel/carbon steel interface while reducing the rolling force, thereby improving the anti-brittle delamination ability of the stainless steel/carbon steel pre-clad strip blank and increasing the yield.
(3)采用该方法，以不锈钢/碳钢预复合板带坯进行单道次热轧，压合界面微孔并实现界面高强度冶金结合，替代温轧或室温冷轧复合不锈钢/碳钢板坯的扩散退火处理工序，显著提高了生产效率和不锈钢/碳钢复合薄板带材的界面结合强度。(3) Using this method, the stainless steel/carbon steel pre-clad slab is used for single-pass hot rolling, and the interface micropores are pressed together to achieve high-strength metallurgical bonding at the interface, replacing warm rolling or room temperature cold-rolling clad stainless steel/carbon steel slabs The advanced diffusion annealing treatment process significantly improves the production efficiency and the interface bonding strength of stainless steel/carbon steel composite thin plate and strip.
(4)采用该方法制备不锈钢/碳钢复合薄板带材时，在空气氛围下加热即可，无需在真空、还原性气氛或保护性气氛下加热，设备投入少，操作方便，生产效率高，产品成本低，特别适合于制备大尺寸大卷重的不锈钢/碳钢复合薄板带材。(4) When adopting this method to prepare stainless steel/carbon steel composite sheet and strip, it can be heated under air atmosphere without heating under vacuum, reducing atmosphere or protective atmosphere, less equipment investment, convenient operation and high production efficiency. The product cost is low, and it is especially suitable for preparing stainless steel/carbon steel composite sheet and strip with large size and heavy coil weight.
附图说明Description of drawings
图1为成卷形式的不锈钢/碳钢/不锈钢复合薄板带材连续化制备的轧制流程示意图。其中，1为开卷设备，2为在线打磨设备，3为碳钢板带坯，4为不锈钢板带坯，5为在线组坯设备，6为不锈钢/碳钢/不锈钢层状坯料，7、10为在线加热设备，8、11为轧机，9为不锈钢/碳钢/不锈钢预复合板带坯，12为不锈钢/碳钢/不锈钢复合薄板带材，13为收卷设备。Fig. 1 is a schematic diagram of the rolling process for the continuous preparation of stainless steel/carbon steel/stainless steel composite sheet and strip in the form of coils. Among them, 1 is uncoiling equipment, 2 is online grinding equipment, 3 is carbon steel strip blank, 4 is stainless steel strip blank, 5 is online billet assembly equipment, 6 is stainless steel/carbon steel/stainless steel layered blank, 7 and 10 are On-line heating equipment, 8 and 11 are rolling mills, 9 is stainless steel/carbon steel/stainless steel pre-composite strip blank, 12 is stainless steel/carbon steel/stainless steel composite thin plate and strip, and 13 is winding equipment.
图2为采用本发明所述方法实施例1制备的304不锈钢/Q235钢复合薄板带材的截面形貌。Fig. 2 is the cross-sectional appearance of the 304 stainless steel/Q235 steel composite thin plate strip prepared by the
具体实施方式detailed description
以下结合实施例对本发明进行具体描述，需指出的是以下实施例只用于对本发明进行进一步说明，不能理解为对本发明保护范围的限制，本领域技术人员可以根据本发明内容做出非本质的改进和调整。The present invention is specifically described below in conjunction with the examples, it should be pointed out that the following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention, those skilled in the art can make non-essential according to the content of the present invention Improvements and adjustments.
如图1所示，图1为成卷形式的不锈钢/碳钢/不锈钢复合薄板带材连续化制备的轧制流程示意图。其中，1为开卷设备，2为在线打磨设备，3为碳钢板带坯，4为不锈钢板带坯，5为在线组坯设备，6为不锈钢/碳钢/不锈钢层状坯料，7、10为在线加热设备，8、11为轧机，9为不锈钢/碳钢/不锈钢预复合板带坯，12为不锈钢/碳钢/不锈钢复合薄板带材，13为收卷设备。As shown in Figure 1, Figure 1 is a schematic diagram of the rolling process for the continuous preparation of stainless steel/carbon steel/stainless steel composite thin plate and strip in the form of coils. Among them, 1 is uncoiling equipment, 2 is online grinding equipment, 3 is carbon steel strip blank, 4 is stainless steel strip blank, 5 is online billet assembly equipment, 6 is stainless steel/carbon steel/stainless steel layered blank, 7 and 10 are On-line heating equipment, 8 and 11 are rolling mills, 9 is stainless steel/carbon steel/stainless steel pre-composite strip blank, 12 is stainless steel/carbon steel/stainless steel composite thin plate and strip, and 13 is winding equipment.
实施例1：Example 1:
以厚度为1mm的单张形式的304不锈钢板带坯和厚度为1.5mm的单张形式的Q235钢板带坯为原材料，制备304不锈钢/Q235钢复合薄板带材。The 304 stainless steel strip blank with a thickness of 1 mm and the Q235 steel strip blank with a thickness of 1.5 mm were used as raw materials to prepare 304 stainless steel/Q235 steel composite sheet strip.
分别对304不锈钢板带坯和Q235钢板带坯进行软化退火处理，304不锈钢板带坯的软化退火制度是1050℃保温1h空冷，Q235钢板带坯的软化退火制度是880℃保温1h炉冷；The softening annealing treatment is carried out on the 304 stainless steel strip blank and the Q235 steel strip blank respectively. The softening annealing system of the 304 stainless steel strip blank is 1050 ° C for 1 hour and air cooling, and the softening annealing system for the Q235 steel strip blank is 880 ° C for 1 hour furnace cooling;
用装有百叶片的角磨机分别对304不锈钢板带坯和Q235钢板带坯待复合表面进行离线机械打磨，去除待复合表面的污染物和氧化层，获得洁净、粗糙的待复合表面，机械打磨形成的打磨条纹方向垂直于304不锈钢板带坯和Q235钢板带坯的长度方向；Use an angle grinder equipped with louvers to perform off-line mechanical grinding on the surface of the 304 stainless steel strip blank and the Q235 steel strip blank to be compounded, remove the pollutants and oxide layer on the surface to be compounded, and obtain a clean and rough surface to be compounded. The direction of the grinding stripes formed by grinding is perpendicular to the length direction of the 304 stainless steel strip blank and the Q235 steel strip blank;
将机械打磨后的304不锈钢板带坯和Q235钢板带坯按照304不锈钢/Q235钢的顺序层叠组坯，获得304不锈钢/Q235钢层状坯料；The 304 stainless steel strip blank and the Q235 steel strip blank after mechanical grinding are laminated and formed according to the sequence of 304 stainless steel/Q235 steel to obtain the 304 stainless steel/Q235 steel layered blank;
将304不锈钢/Q235钢层状坯料在空气氛围中进行加热，加热温度为200℃、保温时间为10min，紧跟着将加热后的304不锈钢/Q235钢层状坯料进行预轧制复合，预轧制复合压下率为60％，获得304不锈钢/Q235钢预复合板带坯；Heat the 304 stainless steel/Q235 steel layered billet in the air atmosphere, the heating temperature is 200°C, and the holding time is 10 minutes, followed by pre-rolling and compounding the heated 304 stainless steel/Q235 steel layered billet, pre-rolling The composite reduction rate is 60%, and the 304 stainless steel/Q235 steel pre-composite strip blank is obtained;
将304不锈钢/Q235钢预复合板带坯在空气氛围中进行加热，加热温度为1100℃、保温时间为20min，紧接着将加热后的304不锈钢/Q235钢预复合板带坯进行终轧制复合，终轧制复合压下率为45％，获得304不锈钢/Q235钢复合薄板带材。该304不锈钢/Q235钢复合薄板带材的截面形貌如图2所示。The 304 stainless steel/Q235 steel pre-clad slab is heated in the air atmosphere, the heating temperature is 1100 ℃, the holding time is 20min, and then the heated 304 stainless steel/Q235 steel pre-clad slab is subjected to final rolling and compounding , the final rolling composite reduction rate is 45%, and the 304 stainless steel/Q235 steel composite thin plate strip is obtained. The cross-sectional appearance of the 304 stainless steel/Q235 steel composite sheet and strip is shown in Figure 2.
实施例2：Example 2:
以厚度为1mm的单张形式的316不锈钢板带坯以及厚度为3mm的单张形式的Q235钢板带坯为原材料，制备316不锈钢/Q235钢/316不锈钢复合薄板带材。The 316 stainless steel strip blank with a thickness of 1mm and the Q235 steel strip blank with a thickness of 3mm were used as raw materials to prepare 316 stainless steel/Q235 steel/316 stainless steel composite sheet strip.
分别对316不锈钢板带坯和Q235钢板带坯进行软化退火处理，316不锈钢板带坯的软化退火制度是1050℃保温1h空冷，Q235钢板带坯的软化退火制度是880℃保温1h后炉冷；The 316 stainless steel strip blank and the Q235 steel strip blank are softened and annealed respectively. The softening annealing system of the 316 stainless steel strip blank is 1050 ° C for 1 hour and air cooling, and the softening annealing system for the Q235 steel strip is 880 ° C for 1 hour and then furnace cooling;
用装有磨轮的角磨机分别对316不锈钢板带坯和Q235钢板带坯待复合表面进行离线机械打磨，去除待复合表面的污染物和氧化层，获得洁净、粗糙的待复合表面，机械打磨形成的打磨条纹方向垂直于316不锈钢板带坯和Q235钢板带坯的长度方向；Use an angle grinder equipped with a grinding wheel to perform off-line mechanical grinding on the surface of the 316 stainless steel strip blank and the Q235 steel strip blank to be compounded, remove the pollutants and oxide layer on the surface to be compounded, and obtain a clean and rough surface to be compounded, mechanically grind The direction of the formed grinding stripes is perpendicular to the length direction of the 316 stainless steel strip blank and the Q235 steel strip blank;
将机械打磨后的316不锈钢板带坯和Q235钢板带坯按照316不锈钢/Q235钢/316不锈钢的顺序层叠组坯，获得316不锈钢/Q235钢/316不锈钢层状坯料；The 316 stainless steel strip blank and the Q235 steel strip blank after mechanical grinding are laminated and formed according to the order of 316 stainless steel/Q235 steel/316 stainless steel to obtain 316 stainless steel/Q235 steel/316 stainless steel layered blank;
将316不锈钢/Q235钢/316不锈钢层状坯料在空气氛围中进行加热，加热温度为300℃、保温时间为5min，紧跟着将加热后的316不锈钢/Q235钢/316不锈钢层状坯料进行预轧制复合，预轧制复合压下率为55％，获得316不锈钢/Q235钢/316不锈钢预复合板带坯；The 316 stainless steel/Q235 steel/316 stainless steel layered billet was heated in the air atmosphere, the heating temperature was 300°C, and the holding time was 5 minutes, followed by the heated 316 stainless steel/Q235 steel/316 stainless steel layered billet. Rolling composite, pre-rolling composite reduction rate of 55%, to obtain 316 stainless steel/Q235 steel/316 stainless steel pre-clad strip blank;
对316不锈钢/Q235钢/316不锈钢预复合板带坯在空气氛围中进行加热，加热温度为1100℃、保温时间为10min，紧接着将加热后的316不锈钢/Q235钢/316不锈钢预复合板带坯进行终轧制复合，终轧制复合压下率为40％，获得316不锈钢/Q235钢/316不锈钢复合薄板带材。Heat the 316 stainless steel/Q235 steel/316 stainless steel pre-clad strip blank in the air atmosphere, the heating temperature is 1100°C, and the holding time is 10min, and then the heated 316 stainless steel/Q235 steel/316 stainless steel pre-clad strip The billet is subjected to final rolling compounding, and the final rolling compounding reduction rate is 40%, and 316 stainless steel/Q235 steel/316 stainless steel composite thin plate and strip are obtained.
实施例3：Example 3:
以厚度为1.5mm的成卷形式的304不锈钢板带坯以及厚度为3mm的成卷形式的Q235钢板带坯为原材料，连续化制备成卷形式的304不锈钢/Q235钢复合薄板带材。The 304 stainless steel strip with a thickness of 1.5mm in coil form and the Q235 steel strip with a thickness of 3mm in coil form are used as raw materials to continuously prepare 304 stainless steel/Q235 steel composite sheet strip in coil form.
分别对成卷形式的304不锈钢板带坯和Q235钢板带坯进行软化退火处理，304不锈钢板带坯的软化退火制度是1050℃保温1h空冷，Q235钢板带坯的软化退火制度是880℃保温1h炉冷；The 304 stainless steel strip blank and the Q235 steel strip blank in the form of coils are respectively softened and annealed. The softening annealing system of the 304 stainless steel strip blank is 1050 °C for 1 hour and air cooling, and the softening annealing system for the Q235 steel strip is 880 °C for 1 hour. Furnace cold;
利用开卷设备分别对厚度为1.5mm的成卷形式的304不锈钢板带坯和厚度为3mm的成卷形式的Q235钢板带坯进行开卷，用装有百叶片的在线打磨设备分别对304不锈钢板带坯和Q235钢板带坯待复合表面进行在线机械打磨，去除待复合表面的污染物和氧化层，获得洁净、粗糙的待复合表面，机械打磨形成的打磨条纹方向垂直于304不锈钢板带坯和Q235钢板带坯的长度方向；Use uncoiling equipment to uncoil the 304 stainless steel strip blanks with a thickness of 1.5mm and the Q235 steel strip blanks with a thickness of 3mm, and use the online grinding equipment equipped with louvers to respectively uncoil the 304 stainless steel strips. The billet and Q235 steel strip to be compounded are subjected to online mechanical grinding to remove pollutants and oxide layers on the surface to be compounded to obtain a clean and rough surface to be compounded. The direction of the grinding stripes formed by mechanical grinding is perpendicular to the 304 stainless steel strip and Q235 The length direction of the steel strip;
利用在线组坯设备将机械打磨后的304不锈钢板带坯和Q235钢板带坯按照304不锈钢/Q235钢的顺序层叠组坯，获得304不锈钢/Q235钢层状坯料；The 304 stainless steel strip blank and the Q235 steel strip blank after mechanical grinding are stacked and stacked in the order of 304 stainless steel/Q235 steel by using the online billet assembly equipment to obtain the 304 stainless steel/Q235 steel layered blank;
利用在线加热设备将304不锈钢/Q235钢层状坯料在空气氛围中进行加热，加热温度为600℃、保温时间为0.05min，紧跟着进入轧机进行预轧制复合，预轧制复合压下率为45％，获得304不锈钢/Q235钢预复合板带坯；Use online heating equipment to heat 304 stainless steel/Q235 steel layered blanks in the air atmosphere. The heating temperature is 600°C and the holding time is 0.05min. Then it enters the rolling mill for pre-rolling and compounding. 45%, to obtain 304 stainless steel/Q235 steel pre-composite strip blank;
接着利用在线加热设备对304不锈钢/Q235钢预复合板带坯在空气氛围中进行加热，加热温度为1100℃、保温时间为0.05min，紧接着进入轧机进行终轧制复合，终轧制复合压下率为40％，利用收卷设备获得成卷形式的304不锈钢/Q235钢复合薄板带材。Then use the on-line heating equipment to heat the 304 stainless steel/Q235 steel pre-clad strip blank in the air atmosphere, the heating temperature is 1100 ℃, the holding time is 0.05min, and then enter the rolling mill for final rolling and compounding, and the final rolling and compounding pressure The reduction rate is 40%, and the 304 stainless steel/Q235 steel composite thin plate and strip in the form of coils are obtained by using the coiling equipment.
实施例4：Example 4:
以厚度为0.5mm的成卷形式的316不锈钢板带坯以及厚度为4mm的成卷形式的Q345钢板带坯为原材料，连续化制备成卷形式的316不锈钢/Q345钢/316不锈钢复合薄板带材。316 stainless steel strips with a thickness of 0.5mm in coils and Q345 steel strips with a thickness of 4mm in coils are used as raw materials to continuously prepare 316 stainless steel/Q345 steel/316 stainless steel composite sheet strips in coils .
分别对成卷形式的316不锈钢板带坯和成卷形式的Q345钢板带坯进行软化退火处理，316不锈钢板带坯的软化退火制度是1050℃保温1h空冷，Q345钢带坯的软化退火制度是900℃保温1h炉冷；The 316 stainless steel strip blank in coil form and the Q345 steel strip blank in coil form are respectively softened and annealed. The softening annealing system of 316 stainless steel strip blank is 1050 ° C for 1 hour and air cooling, and the softening annealing system of Q345 steel strip blank is 900 ℃ heat preservation 1h furnace cooling;
利用开卷设备1分别对厚度为0.5mm的成卷形式的316不锈钢板带坯4和厚度为4mm的成卷形式的Q345钢板带坯3进行开卷，用装有砂带的在线打磨设备2分别对316不锈钢板带坯和Q345钢板带坯待复合表面进行在线机械打磨，去除待复合表面的污染物和氧化层，获得洁净、粗糙的待复合表面，机械打磨形成的打磨条纹方向垂直于316不锈钢板带坯和Q345钢板带坯的长度方向；Utilize the
利用在线组坯设备5将机械打磨后的316不锈钢板带坯和Q345钢板带坯按照316不锈钢/Q345钢/316不锈钢的顺序层叠组坯，获得316不锈钢/Q345钢/316不锈钢层状坯料6；The 316 stainless steel strip blank and the Q345 steel strip blank after mechanical grinding are stacked and stacked in the order of 316 stainless steel/Q345 steel/316 stainless steel by using the online billet assembly equipment 5 to obtain the 316 stainless steel/Q345 steel/316 stainless steel layered blank 6;
利用在线加热设备7将316不锈钢/Q345钢/316不锈钢层状坯料在空气氛围中进行加热，加热温度为600℃、保温时间为0.05min，紧跟着进入轧机8进行预轧制复合，预轧制复合压下率为50％，获得316不锈钢/Q345钢/316不锈钢预复合板带坯9；Use the online heating equipment 7 to heat the 316 stainless steel/Q345 steel/316 stainless steel layered billet in the air atmosphere, the heating temperature is 600°C, the holding time is 0.05min, and then enter the rolling
接着利用在线加热设备10对316不锈钢/Q345钢/316不锈钢预复合板带坯在空气氛围中进行加热，加热温度为1200℃，保温时间为0.05min，紧接着进入轧机11进行终轧制复合，终轧制复合压下率为40％，利用收卷设备13获得成卷形式的316不锈钢/Q345钢/316不锈钢复合薄板带材12。Then use the
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02284701A (en) * | 1989-04-26 | 1990-11-22 | Kawasaki Steel Corp | Manufacture of cold-rolled stainless steel strip |
| US5003804A (en) * | 1988-12-23 | 1991-04-02 | Kawasaki Steel Corporation | Method for pre-processing stainless steel strip intended to be cold-rolled |
| WO2010130871A1 (en) * | 2009-05-11 | 2010-11-18 | Rautaruukki Oyj | Method for manufacturing hot rolled steel strip product, and hot rolled steel strip product |
| CN101992567A (en) * | 2009-08-26 | 2011-03-30 | 比亚迪股份有限公司 | Stainless steel/aluminum composite material and preparation method thereof |
| CN109849455A (en) * | 2019-02-22 | 2019-06-07 | 北京科技大学 | A kind of magnesium/steel layer shape composite material and preparation method |
| CN110340142A (en) * | 2019-06-20 | 2019-10-18 | 燕山大学 | A method for preparing steel-aluminum composite panels by two-step rolling |
| CN110665969A (en) * | 2019-10-09 | 2020-01-10 | 北京科技大学 | A kind of preparation method of high-performance titanium/steel bimetallic composite plate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5664797B2 (en) * | 2011-11-21 | 2015-02-04 | 新日鐵住金株式会社 | Hot-rolled steel sheet for nitriding excellent in fatigue strength, cold-rolled steel sheet for nitriding, production method thereof, and automotive parts excellent in fatigue strength using them |
-
2021
- 2021-05-12 CN CN202110517088.4A patent/CN113172980B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5003804A (en) * | 1988-12-23 | 1991-04-02 | Kawasaki Steel Corporation | Method for pre-processing stainless steel strip intended to be cold-rolled |
| JPH02284701A (en) * | 1989-04-26 | 1990-11-22 | Kawasaki Steel Corp | Manufacture of cold-rolled stainless steel strip |
| WO2010130871A1 (en) * | 2009-05-11 | 2010-11-18 | Rautaruukki Oyj | Method for manufacturing hot rolled steel strip product, and hot rolled steel strip product |
| CN101992567A (en) * | 2009-08-26 | 2011-03-30 | 比亚迪股份有限公司 | Stainless steel/aluminum composite material and preparation method thereof |
| CN109849455A (en) * | 2019-02-22 | 2019-06-07 | 北京科技大学 | A kind of magnesium/steel layer shape composite material and preparation method |
| CN110340142A (en) * | 2019-06-20 | 2019-10-18 | 燕山大学 | A method for preparing steel-aluminum composite panels by two-step rolling |
| CN110665969A (en) * | 2019-10-09 | 2020-01-10 | 北京科技大学 | A kind of preparation method of high-performance titanium/steel bimetallic composite plate |
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