CN101760603A - Manufacture method of composite milling roller with good roller surface rigidity uniformity - Google Patents

Manufacture method of composite milling roller with good roller surface rigidity uniformity Download PDF

Info

Publication number
CN101760603A
CN101760603A CN 201010033822 CN201010033822A CN101760603A CN 101760603 A CN101760603 A CN 101760603A CN 201010033822 CN201010033822 CN 201010033822 CN 201010033822 A CN201010033822 A CN 201010033822A CN 101760603 A CN101760603 A CN 101760603A
Authority
CN
China
Prior art keywords
roll
cooling
milling roller
composite milling
roller
Prior art date
Application number
CN 201010033822
Other languages
Chinese (zh)
Inventor
宫开令
符寒光
雷永平
Original Assignee
北京工业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京工业大学 filed Critical 北京工业大学
Priority to CN 201010033822 priority Critical patent/CN101760603A/en
Publication of CN101760603A publication Critical patent/CN101760603A/en

Links

Abstract

The invention discloses a manufacture method of a composite milling roller with good roller surface rigidity uniformity, which is characterized in that the method comprises the following steps: firstly, heating the composite milling roller to a temperature 80 to 150 DEG C higher than the critical point AC1 in a heating furnace; placing the composite milling roller into a cold controller after heat preservation; firstly, spraying and cooling the composite milling roller for 5 to 15 minutes; then, cooling the composite milling roller for 20 to 60 minutes by gas; finally, cooling the composite milling roller by air until the roller surface temperature is lower than 300 DEG C; putting the composite milling roller into a furnace for tempering treatment at the tempering heating temperature between 450 and 580 DEG C; cooling the furnace to the temperature lower than 200 DEG C after heat preservation; and cooling the composite milling roller to the room temperature by air. The rigidity of the rolling surface of the composite milling roller of the invention is uniform, the service life is obviously prolonged, and the invention has good economic benefits when being popularized and applied.

Description

一种辊面硬度均匀性好的复合轧辊的制造方法 A method for producing a uniform hardness and good composite roll surface of a roll

技术领域 FIELD

[0001] 本发明为一种复合轧辊制造方法,特别涉及一种辊面硬度均匀性好的复合轧辊及 [0001] The present invention is a method for producing a composite roll, particularly to a uniform roll surface hardness and good composite roll

其制造方法,属于轧辊制造技术领域。 Its manufacturing method belongs to the field of manufacturing roll. 背景技术 Background technique

[0002] 现代冶金工业生产是集采矿、选矿、烧结、炼铁、炼钢和轧钢为一体的系统工程,轧钢是这一系统工程的最后一个环节,绝大多数冶金产品要经过轧制过程才能进入市场。 [0002] Modern industrial production is metallurgical mining, beneficiation, sintering, iron making, steel making and steel rolling into one of the systems engineering, steel rolling is the last link in the system engineering, the vast majority of metallurgical products to go through the process of rolling enter the market. 而轧辊又是轧制过程中最重要的生产工具,轧辊的质量好坏直接影响着冶金产品的产量和质量,一个国家的轧辊制造技术的高低直接反映了该国冶金工业水平的高低。 The roll is rolling process is the most important means of production, the quality is good or bad rolls directly affect the yield and quality of metallurgical products, the level of a national roll manufacturing technology directly reflects the level of the country's metallurgical industry levels. 现代冶金轧辊从材质和制造工艺的发展上经历了几个重要过程:轧辊材质从单一的白口铸铁、球墨铸铁、 铸钢逐渐发展到复合轧辊用高镍铬铸铁、高铬铸铁直至最新发展的铸造高速钢;制造工艺也从普通整体铸造工艺发展到复合铸造工艺(即轧辊辊面用一种材料,辊芯用另一种材料,二者之间冶金结合),复合铸造工艺从静态浇注法(即溢流法或冲洗法)发展到离心铸造法直至目前最先进的连续浇铸复合铸造法(即CPC法)轧辊制造技术。 Modern Metallurgy roll through several important processes from the development of materials and manufacturing processes: material from a single roll of white cast iron, ductile iron, cast composite roll gradually developed to a high nickel-chromium cast iron, high chromium cast iron up to the latest developments in cast high speed steel; ordinary manufacturing processes from the development of the entire casting process into composite casting process (i.e., roll surface with a material roll core with another material, metallurgical bond between the two), static composite casting process from a casting method (i.e., overflow method or washing method) to develop a centrifugal casting method until the most advanced composite casting continuous casting method (i.e. CPC method) roll manufacturing techniques. 但是,国内轧辊因热处理技术落后,其辊面硬度不均匀性达到8HSD左右,较国际先进水平超高4〜6HSD,辊面硬度不均匀导致轧辊加工困难,且耐磨性、抗热疲劳、抗裂纹和抗断裂性差,轧辊使用寿命短。 However, by the heat treatment roll domestic technology behind the roll surface hardness unevenness reach 8HSD, more advanced level ultrahigh 4~6HSD, resulting in non-uniform roll surface hardness of the hard roll machining, and the wear resistance, resistance to thermal fatigue, anti- crack fracture resistance and poor roll life is short.

[0003] 为了提高轧辊辊面硬度均匀性,中国专利CN2545213公开了轧辊幕帘式喷水环冷却装置,其技术措施:主要由喷水环体(1)、进水口(2)、喷水环体(1)内的贮水仓(3)、工件孔(4)及喷水口(5)组成,其特征在于喷水环体(1)分为喷水环盖(6)及喷水环下体(7)两部分,喷水环盖(6)及喷水环下体(7)两者之间的喷水口(5)为环状缝隙式。 [0003] In order to improve the hardness of the roll surface uniform, China Patent No. CN2545213 discloses a ring roller curtain spray cooling apparatus, which technical measures: mainly water ring (1), inlet (2), spray ring reservoir cartridge body (3) in (1), the workpiece hole (4) and the spout (5), characterized in that the spray ring (1) divided spray ring cover (6) and the spray ring lower body (7) in two parts, water ring cover (6) and lower body water ring (7) in between the spout (5) is an annular slot type. 本实用新型的优点在于能使其表面冷却均匀且硬度质量高、无软点、淬火透彻、不易产生变形。 The present invention is advantageous in that it can uniformly cool surface quality and high in hardness, no soft spots, thorough quenching, easily deformed. 但该设备结构复杂,直接用于复合轧辊的淬火冷却操作麻烦。 However, the device structure is complicated, troublesome operations was used directly in the quench and cooling the composite roll. 郭峰等人(郭峰,刘时雨,赵溪泉.开槽轧辊整体差温加热喷雾淬火工艺的改进.大型铸锻件,2002年第3期:22-25页)还研究了开槽轧辊整体差温加热喷雾淬火工艺,研究发现,开槽轧辊在加热后喷雾时,两侧外端角崩边,导致报废,研制了附具对端角进行保护,喷雾时将附具放置在辊身端角处,有效地避免了雾水直接喷射到工件端角处,防止了水雾对工件端角冷却过激和端角崩边现象的出现,但存在操作麻烦的不足。 Guo Feng et al (. Guo Feng, Liu Shiyu, Zhao Xi Quan improved spray quenching process of grooving rolls overall differential heating large castings and forgings, 2002, 3: 22-25 pages) also studied the grooving rolls overall differential heating spray quenching process, found grooving rolls during spraying after heating, both outer-end corner chipping, resulting in scrapped, accompanied by the development of the protection angle end, when placed in the body accompanied by spraying at the end of the roll angle, effectively avoid fog injected directly into the end corner of the workpiece, the workpiece is prevented from occurrence mist cooling extreme end angle and the end angle chipping phenomenon, but less troublesome operations exist. 中国发明专利CN 1221036还公开了一种轧辊、矫直辊表面淬火方法及淬火设备。 Chinese invention patent CN 1221036 also discloses a roll, straightening roll quenching equipment and a method of surface hardening. 所说的淬火设备包括机床、氩弧焊机、喷水嘴组成,所述的轧辊、矫直辊表面淬火方法是,轧辊、矫直辊以一定圆周速度旋转,而氩弧焊炬以配合好的速度沿轧辊、 矫直辊轴向运动,喷水嘴固定在焊炬下面。 He said quench apparatus comprises a machine, welding machine, water nozzles composed of the roll, straightening roller is a surface hardening method, roll straightening roller is rotated at a constant peripheral speed, and welding torch to fit well speed along the roller, the axial movement of the straightening roller, spray nozzle fixed to the torch below. 氩气保护电弧燃烧,对轧辊、矫直辊表面进行加热,同时喷水嘴对已加热的轧辊、矫直辊喷水冷却淬火。 Protection of argon arc burning on the rolls, the straightening roll surface while heating the water spray nozzle of heated rolls, straightening rolls quenching water spray cooling. 但是,此方法需要氩气保护电弧燃烧,轧辊表面温度均匀性较差,轧辊辊面硬度均匀性也不高。 However, this method requires the protection of argon arc burning, roll surface temperature uniformity is poor, the homogeneity of hardness is not high roll surface.

发明内容 SUMMARY

[0004] 本发明是针对现有轧辊热处理技术存在的不足,提出了一种确保轧辊辊面硬度均匀的轧辊的制备方法。 [0004] The present invention is directed to the shortcomings of the prior art heat roll, we proposed a method for producing a roller to ensure uniform hardness of the roll surface.

[0005] 本发明是在现有耐磨复合轧辊的基础上改进而成的。 [0005] The present invention is made to improve the existing wear-resistant composite on the roll. 现有耐磨复合轧辊淬火热处理时,轧辊直接放在热处理炉内加热和保温,在随后冷却时,普遍采用风冷、雾冷或空冷方式,以得到耐磨性好的马氏体组织。 When the conventional wear-resistant composite roll quenching roll directly on the heat treatment furnace and heat insulation, during subsequent cooling, generally using air cooling, air cooling or mist cooling, martensite to obtain good wear resistance. 采用空冷或风冷,硬度低且淬硬层深度浅,导致轧辊耐磨性差,使用寿命短。 Air-cooled or air-cooled, low hardness and hardened layer depth is shallow, resulting in poor wear resistance, roll, short life. 而直接采用雾冷处理,辊面易出现裂纹,且辊颈硬度过高,使用中易磨损轴承,且雾冷时辊颈强度低,韧性差,轧辊使用中易出现断辊事故。 Cold mist and direct use of the processing, the roller surface prone to crack, and the roll neck hardness is too high, easy to use, bearing wear, and low fog cold roll neck strength, toughness is poor, use of the roll in the roll-off accident prone.

[0006] 辊面硬度均匀性好的复合轧辊制造方法的特点是复合轧辊经加热和保温后,将轧辊置于控冷装置中,并使轧辊冷却过程中以一定速度旋转,同时在轧辊辊颈表面涂敷隔热材料,且辊颈置于控冷装置以外,这样可以获得辊面硬度高且硬度均匀性好,辊颈强韧性好的复合轧辊。 [0006] Hardness of roller surface uniformity characteristics of a good composite roll method for producing a composite roll after heating and holding, the roll placed in the controlled cooling apparatus, and roll cooling process rotated at a constant speed, while the roll neck in coating the surface of a heat insulating material placed outside the roll neck and the controlled cooling apparatus, which can obtain a high and uniform hardness of the roll surface hardness, toughness roll neck good composite roll.

[0007] 本发明可以通过以下措施来实现,参见图1复合轧辊冷却示意图。 [0007] The present invention can be achieved by the following measures, see Fig 1 a schematic view of a composite roll cooling. [0008] 首先将复合轧辊在加热炉内加热至临界点AC1以上80〜15(TC,经保温4-6小时后后置于控冷装置(4)中,使辊身(3)置于控冷装置(4)内,辊颈(1)置于控冷装置以外,轧辊在冷却过程中以25〜35rpm的速度旋转,同时在轧辊辊颈表面涂敷隔热材料(2);轧辊在控冷装置(4)中,先经雾、气冷却器(5)喷雾冷却5〜15分钟,然后气冷20〜60分钟, 最后空冷至辊面温度低于30(TC;此时入炉进行回火处理,回火加热温度450〜58(TC,经保温6-15小时后炉冷至温度低于20(TC后空冷至室温。 [0009] 上述所述涂敷隔热材料(2)的厚度为2-4mm。 [0008] First, the composite roll was heated in a heating furnace to above the critical point AC1 80~15 (TC, after 4-6 hours incubation placed after controlled cooling means (4), the roller body (3) is placed in control cooling means (4), the neck roll (1) is placed outside the controlled cooling apparatus, a roll rotating at a speed 25~35rpm during cooling, while the roll neck insulating material applied to the surface (2); control rolls cooling means (4), the first (5) through the mist spray cooling, gas cooler 5~15 minutes, and then air-cooled 20~60 minutes, and finally cooled to a temperature below the roll plane 30 (TC; this time back into the furnace fire process, the tempering heating temperature (TC, 6-15 hours after incubation furnace cooling to a temperature below 20 (cooled to room temperature TC. thickness [0009] the coating of the insulating material (2) is 450~58 It is 2-4mm.

[0010] 上述所述涂敷隔热材料(2)为导热系数小于0. 08 (w/m. k)的隔热材料。 [0010] The coating of the insulating material (2) is smaller than the coefficient of thermal conductivity (w / m. K) insulating material 0.08. [0011] 本发明的原理如下: [0011] The principles of the present invention is as follows:

[0012] 本发明首先将轧辊加热至辊身材料的临界点Aa以上80〜150°C的目的是促使基 [0012] The object of the present invention is first heated roll-to-roll material body Aa above the critical point of 80~150 ° C is to promote group

体奥氏体化,有利于随后冷却过程中获得高硬度的马氏体组织。 Of austenite, facilitates subsequent cooling process to obtain a high hardness martensite. 轧辊经保温后置于控冷装 After incubation rolls by controlled cooling means disposed

置中,并使轧辊冷却过程中以25〜35rpm的速度旋转,有利于轧辊辊面冷却均匀,对提高辊 Centering, and during the cooling roll rotating at a speed 25~35rpm, to facilitate uniform cooling roll surface, to improve the roll

面硬度的均匀性有利。 Surface hardness uniformity advantageous. 同时在轧辊辊颈表明涂敷隔热材料,且辊颈置于控冷装置以外,可确 Applying heat insulating material also shows the roll neck, roll neck and the controlled cooling device is placed outside, may be determined

保辊颈冷却缓慢,有利于提高辊颈强韧性,防止辊颈使用中出现断裂事故。 Paul slow cooling roll neck, help to improve the toughness of the roll neck, preventing breakage accident of the roll neck in use.

[0013] 轧辊在控冷装置中,先喷雾冷却5〜15分钟,然后气冷20〜60分钟。 [0013] In the controlled cooling roll apparatus, the first spray cooling 5~15 minutes, and then air-cooled 20~60 minutes. 喷雾冷却 Spray cooling

速度快,有利于促进奥氏体向马氏体转变,提高轧辊淬硬层深度,但是喷雾冷却时间过长, Speed, and promoting austenite to martensite, and increase roll hardened layer depth, but spray cooling time is too long,

辊身内应力大,易萌生裂纹,因此,将喷雾冷却时间控制在5〜15分钟,然后降低冷却速度, Inner roller body stress, easy to crack initiation, therefore, the spray cooling time control 5~15 minutes, then lowering the cooling rate,

采用气冷20〜60分钟。 Using air cooled 20~60 minutes. 最后空冷至辊面温度低于30(TC时入炉进行回火处理。回火的目 Finally, the roll surface cooled to a temperature below 30 (the TC of tempering furnace. Tempered mesh

的是为了稳定组织,消除应力,确保轧辊使用安全可靠。 It is to stabilize the organization, stress relief, to ensure safe and reliable use of the roll.

[0014] 本发明与现有技术相比具有以下优点: [0014] The present invention and the prior art has the following advantages:

[0015] 1、本发明轧辊辊面硬度均匀性好,辊面硬度差小于2HSD。 [0015] 1, roll surface hardness of the present invention, good uniformity, the roll surface hardness is less than 2HSD.

[0016] 2、本发明轧辊辊颈强度高、韧性好,比常用热处理工艺强度提高15〜25%,韧性提高30%以上。 [0016] 2, the present invention is a high roll neck strength and toughness, improve the strength of 15~25% than conventional heat treatment process, the toughness increased by 30%.

[0017] 3、本发明轧辊使用寿命长,相同材质轧辊的使用寿命延长30〜50%。 [0017] 3, the present invention is a long roll life, life extension of the same roll material 30 ~ 50%. 附图说明 BRIEF DESCRIPTION

[0018] 图1为复合轧辊冷却示意图 [0018] FIG. 1 is a schematic view of the cooling the composite roll

[0019] 其中l-辊颈,2-隔热材料,3-辊身,4-控冷装置,5-雾、气冷却器具体实施方式 [0019] wherein l- roll neck, 2-insulating material, a 3-roll body, controlled cooling apparatus 4-, 5- mist, gas cooler DETAILED DESCRIPTION

[0020] 本发明首先将耐磨复合轧辊在加热炉内加热至临界点Ad以上80〜15(TC,经保温后置于控冷装置(4)中,并使轧辊冷却过程中以25〜35rpm的速度旋转,同时在轧辊辊颈(1)表面涂敷隔热材料(2),且辊颈(1)置于控冷装置(4)以外。轧辊在控冷装置(4) 中,先用雾、气冷却器(5)喷雾冷却5〜15分钟,然后气冷20〜60分钟,最后空冷至辊面温度低于30(TC时入炉进行回火处理,回火加热温度450〜58(TC,经保温后炉冷至温度低于20(TC后空冷至室温。 [0020] The wear-resistant composite of the present invention is first heated roll in a heating furnace to above the critical point Ad 80~15 (TC, placed after incubation controlled cooling means (4), and cooling roll to 25~35rpm rotation speed while roll neck (1) surface is coated with a heat insulating material (2), and the roll neck (1) placed in the controlled cooling device (4) away. rolls controlled cooling means (4), first with fog, the gas cooler (5) spray cooling 5~15 minutes, and then air-cooled 20~60 minutes, and finally cooled to a temperature below the roll plane 30 (TC into the furnace tempering, the tempering heating temperature of 450~58 ( TC, by holding the furnace cooling to a temperature below 20 (cooled to room temperature TC.

[0021] 下面结合附图和发明人依本发明的技术方案所完成的实施例对本发明作进一步的详细描述。 Example drawings and under this aspect of the invention the inventors accomplished the present invention will be further described in detail [0021] below in conjunction. 这些实施例仅是本发明的较佳的实施例,但本发明并不限于这些实施例。 These embodiments are merely preferred embodiments of the present invention, but the present invention is not limited to these embodiments. [0022] 实施例1 : [0022] Example 1:

[0023] 将辊身(3)为高碳高钒高速钢、辊颈(1)为球墨铸铁的离心铸造复合轧辊,经退火和粗加工后,在加热炉内加热至高碳高钒高速钢的临界点Aa以上150°C ,经保温4小时后置于控冷装置(4)中,辊身(3)置于控冷装置(4)内,且辊颈(1)置于控冷装置(4)以外,并使轧辊冷却过程中以35rpm的速度旋转,同时在轧辊辊颈(1)表面涂敷隔热材料(2),其厚度为2mm。 [0023] The roller body (3) is a high-carbon high vanadium high speed steel, the roll neck (1) centrifugal cast composite roll of ductile iron, and rough after annealing, heated to a high-carbon high vanadium high speed steel in the heating furnace Aa critical point above 150 ° C, was placed for 4 hours after controlled cooling means (4), the roller body (3) disposed within the controlled cooling apparatus (4), and the roll neck (1) placed in the controlled cooling device ( 4) outside, and the cooling roll rotating at a speed of 35rpm, while in the roll neck (1) surface is coated with a heat insulating material (2) having a thickness of 2mm. 其中高碳高钒高速钢的主要化学成分(质量分数,% )为:1.78C,4.63V,5.04Cr, 2. llNb,O. 57Ni和4. 89Mo。 Wherein the main chemical composition of the high carbon high vanadium high speed steel (wt%) of: 1.78C, 4.63V, 5.04Cr, 2. llNb, O 57Ni and 4. 89Mo.. 隔热材料(2)是导热系数为0. 043 (w/m. k)的CaO/Si02。 Insulating material (2) is the thermal conductivity of 0. 043 (w / m. K) the CaO / Si02. 复合轧辊在控冷装置(4)中,先用雾、气冷却器(5)喷雾雾冷5分钟,然后气冷60分钟,最后空冷至辊面温度低于300°C时入炉进行回火处理,回火加热温度580°C ,经保温6小时后,炉冷至温度低于20(TC后空冷至室温。最后精加工至规定尺寸和精度,测量辊面硬度达到83. 7〜 85. 4HSD,辊面硬度差小于2HSD。 [0024] 实施例2 : Compound into the furnace for tempering rolls controlled cooling means (4), the first with mist, gas cooler (5) cold spray mist 5 minutes and then air-cooled for 60 minutes and finally cooled to the roll surface temperature below 300 ° C when process, the tempering heating temperature of 580 ° C, after incubation for 6 hours and furnace cooled to a temperature below 20 (cooled to room temperature TC finally finished to a predetermined size and accuracy, the measurement roll surface hardness of 83 July to 85. 4HSD, roll surface hardness is less than 2HSD [0024] Example 2:

[0025] 将辊身(3)为高铬铸铁、辊颈(1)为球墨铸铁的离心铸造复合轧辊,经退火和粗加工后,在加热炉内加热至高铬铸铁的临界点Aa以上8(TC,经保温6小时后置于控冷装置(4)中,辊身(3)置于控冷装置(4)内,且辊颈(1)置于控冷装置(4)以外,并使轧辊冷却过程中以25rpm的速度旋转,同时在轧辊辊颈(1)表面涂敷隔热材料(2),其厚度为4mm。其中高铬铸铁的主要化学成分(质量分数,% )为:2. 89C, 18. 61Cr, 1. 04Ni, 1. 88Mo和0. 17Ti。 隔热材料(2)是导热系数为O. 069(w/m. k)的石棉布。复合轧辊在控冷装置(4)中,先用雾、 气冷却器(5)喷雾雾冷15分钟,然后气冷20分钟,最后空冷至辊面温度低于30(TC时入炉进行回火处理,回火加热温度45(TC,经保温15小时后,炉冷至温度低于20(TC后空冷至室温。辊面硬度达到85. 2〜87. OHSD,辊面硬度差小于2HSD。 [0025] The roller body (3) high-chromium cast iron roll neck (1) centrifugal cast composite roll of ductile iron, and rough after annealing, heated to a high chromium cast iron critical point Aa 8 or more in the heating furnace ( TC, placed after 6 hours incubation and controlled cooling means (4), the roller body (3) disposed within (4) controlled cooling apparatus, and a roll neck (1) placed in the controlled cooling device (4) outside, and roll cooling process at a speed of 25rpm rotation, while in the roll neck (1) surface is coated with a heat insulating material (2), a thickness of 4mm main chemical composition wherein the high chromium cast iron (wt%) of: 2 . 89C, 18. 61Cr, 1. 04Ni, 1. 88Mo and 0. 17Ti. insulating material (2) is the thermal conductivity of O. 069 (w / m. k) of the stone cotton composite rolls controlled cooling means ( 4), the first cold mist with the mist spray, the gas cooler (5) for 15 minutes and then air-cooled for 20 minutes, and finally cooled to a temperature below the roll plane 30 (TC into the furnace tempering, the tempering heating temperature of 45 (the TC, after incubation for 15 hours and furnace cooled to a temperature below 20 (cooled to room temperature. 85. the hardness of the roll surface after 2~87 TC. OHSD, roll surface hardness is less than 2HSD.

[0026] 经上述处理的轧辊已在热轧窄带钢轧机和棒材轧机上进行了工业使用考核,发现本发明轧辊磨损均匀,轧材表面质量好,轧辊耐磨性好,使用寿命长。 [0026] have been treated by the above-described roll hot narrow strip rolling mill for industrial use and examination of the bar mill, the roll of the present invention found that a uniform wear, good surface quality of rolled material, roll good abrasion resistance and long service life. 轧辊使用中无断裂、开裂和剥落现象出现。 Use rolls without breaking, cracking and flaking occur. 轧辊使用寿命比相同材质的轧辊延长30〜50%,使用本发明工艺处理轧辊具有很好的经济效益。 Roll 30 ~ 50% longer life than the rolls of the same material, using the process of the present invention, the processing roller having a good economic benefits.

5 5

Claims (3)

  1. 一种辊面硬度均匀性好的复合轧辊的制造方法,其特征在于,包括以下步骤:首先将复合轧辊在加热炉内加热至临界点AC1以上80~150℃,经保温4-6小时后后置于控冷装置(4)中,使辊身(3)置于控冷装置(4)内,辊颈(1)置于控冷装置以外,轧辊在冷却过程中以25~35rpm的速度旋转,同时在轧辊辊颈表面涂敷隔热材料(2);轧辊在控冷装置(4)中,先经雾、气冷却器(5)喷雾冷却5~15分钟,然后气冷20~60分钟,最后空冷至辊面温度低于300℃;此时入炉进行回火处理,回火加热温度450~580℃,经保温6-15小时后炉冷至温度低于200℃后空冷至室温。 One kind of roll surface hardness uniformity good composite roll manufacturing method comprising the steps of: first composite roll was heated in a heating furnace to above the critical point AC1 80 ~ 150 ℃, after 4-6 hours incubation placed controlled cooling means (4), the roller body (3) placed in the controlled cooling device (4), the neck roll (1) is placed outside the controlled cooling apparatus, the roll is rotated at a speed of 25 ~ 35rpm during cooling while the roll neck surface is coated with a heat insulating material (2); rolls controlled cooling means (4), the first (5) cooling the spray mist, the air cooler 5 to 15 minutes, 20 to 60 minutes and then air cooled , and finally cooled to the roll surface temperature below 300 deg.] C; at this time into the tempering furnace, the tempering heating temperature of 450 ~ 580 ℃, after 6-15 hours incubation after furnace cooling to a temperature below 200 ℃ cooled to room temperature.
  2. 2. 按权利要求l所述的方法,其特征在于,所述涂敷隔热材料(2)的厚度为2-4mm。 2. The method as recited in claim l, wherein the coating thickness of the insulating material (2) is 2-4mm.
  3. 3. 按照权利要求l所述的方法,其特征在于,所述涂敷隔热材料(2)为导热系数小于0.08(w/mk)的隔热材料。 3. The method according to claim l, wherein said insulating coating material (2) of heat insulating material is less than the thermal conductivity of 0.08 (w / mk) of.
CN 201010033822 2010-01-08 2010-01-08 Manufacture method of composite milling roller with good roller surface rigidity uniformity CN101760603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010033822 CN101760603A (en) 2010-01-08 2010-01-08 Manufacture method of composite milling roller with good roller surface rigidity uniformity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010033822 CN101760603A (en) 2010-01-08 2010-01-08 Manufacture method of composite milling roller with good roller surface rigidity uniformity

Publications (1)

Publication Number Publication Date
CN101760603A true CN101760603A (en) 2010-06-30

Family

ID=42491982

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010033822 CN101760603A (en) 2010-01-08 2010-01-08 Manufacture method of composite milling roller with good roller surface rigidity uniformity

Country Status (1)

Country Link
CN (1) CN101760603A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102321795A (en) * 2011-10-17 2012-01-18 中钢集团邢台机械轧辊有限公司 Heat treatment method for high ferrochrome roll requiring stepped hardness of roll body
CN103572033A (en) * 2012-08-07 2014-02-12 上海重型机器厂有限公司 Thermal treatment method of wide and thick plate supporting roll
CN104480290A (en) * 2014-12-31 2015-04-01 芜湖金龙模具锻造有限责任公司 Thermal treatment method for stainless steel plate for automobile sheet metal part
CN104531969A (en) * 2014-12-19 2015-04-22 芜湖金龙模具锻造有限责任公司 Heat treatment method for reducing automobile insert deformation
CN104593783A (en) * 2014-12-29 2015-05-06 芜湖金龙模具锻造有限责任公司 Heat treatment method capable of reducing out-of-round deformation of large-diameter ring part
CN104878174A (en) * 2014-02-28 2015-09-02 钢铁研究总院 Method for controlling heat treatment cooling speed of high temperature alloy product
CN106086361A (en) * 2016-07-25 2016-11-09 杭州汽轮动力集团有限公司 A kind of Industrial Steam Turbine Rotors Aided forging piecewise heat treatment method
CN107488772A (en) * 2017-08-21 2017-12-19 宜兴市永昌轧辊有限公司 A kind of cold roll hardening and tempering method
CN107937673A (en) * 2017-12-29 2018-04-20 江苏共昌轧辊股份有限公司 A kind of heat treatment method of New Type of Cold Roller
CN107988479A (en) * 2017-12-29 2018-05-04 中钢集团邢台机械轧辊有限公司 A kind of quasi- differential temperature heat treatment method of large scale roll
CN108396114A (en) * 2018-04-20 2018-08-14 三峡大学 The rotating spraying quenching technical of high-chromium abrasion-proof cast iron part

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102321795B (en) * 2011-10-17 2013-06-19 中钢集团邢台机械轧辊有限公司 Heat treatment method for high ferrochrome roll requiring stepped hardness of roll body
CN102321795A (en) * 2011-10-17 2012-01-18 中钢集团邢台机械轧辊有限公司 Heat treatment method for high ferrochrome roll requiring stepped hardness of roll body
CN103572033B (en) * 2012-08-07 2015-06-24 上海重型机器厂有限公司 Thermal treatment method of wide and thick plate supporting roll
CN103572033A (en) * 2012-08-07 2014-02-12 上海重型机器厂有限公司 Thermal treatment method of wide and thick plate supporting roll
CN104878174A (en) * 2014-02-28 2015-09-02 钢铁研究总院 Method for controlling heat treatment cooling speed of high temperature alloy product
CN104878174B (en) * 2014-02-28 2018-09-07 钢铁研究总院 Control the process of high temperature alloy product heat treatment cooling velocity
CN104531969A (en) * 2014-12-19 2015-04-22 芜湖金龙模具锻造有限责任公司 Heat treatment method for reducing automobile insert deformation
CN104593783A (en) * 2014-12-29 2015-05-06 芜湖金龙模具锻造有限责任公司 Heat treatment method capable of reducing out-of-round deformation of large-diameter ring part
CN104593783B (en) * 2014-12-29 2017-04-19 东莞市创宇模具配件有限公司 Heat treatment method capable of reducing out-of-round deformation of large-diameter ring part
CN104480290A (en) * 2014-12-31 2015-04-01 芜湖金龙模具锻造有限责任公司 Thermal treatment method for stainless steel plate for automobile sheet metal part
CN106086361A (en) * 2016-07-25 2016-11-09 杭州汽轮动力集团有限公司 A kind of Industrial Steam Turbine Rotors Aided forging piecewise heat treatment method
CN107488772A (en) * 2017-08-21 2017-12-19 宜兴市永昌轧辊有限公司 A kind of cold roll hardening and tempering method
CN107937673A (en) * 2017-12-29 2018-04-20 江苏共昌轧辊股份有限公司 A kind of heat treatment method of New Type of Cold Roller
CN107988479A (en) * 2017-12-29 2018-05-04 中钢集团邢台机械轧辊有限公司 A kind of quasi- differential temperature heat treatment method of large scale roll
CN108396114A (en) * 2018-04-20 2018-08-14 三峡大学 The rotating spraying quenching technical of high-chromium abrasion-proof cast iron part

Similar Documents

Publication Publication Date Title
CN101856669B (en) Control method of softness of oxide scales on surface of hot-rolling strip steel
CN100485075C (en) High-carbon high-vanadium high-speed steel composite roller and heat treatment method thereof
CN1038318A (en) Spandex fiber with copolmer soft segment
CN102152058A (en) Surfacing repair method for large cold-rolled supporting roll
CN101798657A (en) Micro-alloy chemical die steel and thermal treatment method thereof
KR100303166B1 (en) Method for heat-treating a hollow cylindrical workpiece
CN101481995A (en) High steel level petroleum casing pipe and oil pipe manufacturing process
CN1846887A (en) Compound high speed steel roll and its making process
CN100494460C (en) Leveler roll and manufacturing process thereof
EP2687612B1 (en) Steel pipe quenching method
JP4321548B2 (en) Hot forging equipment
CN1211626A (en) Quench hardening technique and device for cold-rolling roll
CN100580102C (en) Process for producing high strength hardened and tempered steel by steekle mill on-line quenching
CN1883835A (en) Method for producing coiled sheet by continuous casting and tandem rolling of regular slab
CN101704026B (en) Method for controlling pitting on surface of medium steel plate
CN101560591A (en) Composite temperature cold treatment process
CN103757544B (en) A kind of economical Micro Alloying microalloyed plastic-mould steel plate and manufacture method thereof
CN101537427A (en) Composite roll for centrifugally casting high-chromium cast iron and a preparation method thereof
CN101748333A (en) Low-carbon-equivalent high-strength wear-resistant steel plate and production method thereof
CN1803325A (en) High speed steel composite roll and its preparing method
CN101134996A (en) Double quenching technique for 9Cr2Mo leveler roll
CN1199754C (en) Large roel hard-surface build-up welding repairing method
CN100430181C (en) Novel process for manufacturing retained mandrel for continuous rolling of steel pipe
CN101403032B (en) Thermal treatment process for quick cutting steel composite roll
CN103008050B (en) Surfacing-free centrifugal combined ultra-high anti-abrasion roll squeezer roller sleeve and manufacturing method thereof

Legal Events

Date Code Title Description
C06 Publication
C10 Request of examination as to substance
C12 Rejection of an application for a patent