WO2009146638A1 - 一种新型结构的冶金渣罐及其制造方法 - Google Patents

一种新型结构的冶金渣罐及其制造方法 Download PDF

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Publication number
WO2009146638A1
WO2009146638A1 PCT/CN2009/072066 CN2009072066W WO2009146638A1 WO 2009146638 A1 WO2009146638 A1 WO 2009146638A1 CN 2009072066 W CN2009072066 W CN 2009072066W WO 2009146638 A1 WO2009146638 A1 WO 2009146638A1
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WO
WIPO (PCT)
Prior art keywords
tank
slag
novel structure
metallurgical slag
rib
Prior art date
Application number
PCT/CN2009/072066
Other languages
English (en)
French (fr)
Inventor
廖礼宝
彭程
胡玉平
王有龙
金凤美
周阳
曲金光
姚志军
Original Assignee
宝山钢铁股份有限公司
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
Priority claimed from CNU2008200593327U external-priority patent/CN201217662Y/zh
Priority claimed from CN2008100424728A external-priority patent/CN101368220B/zh
Application filed by 宝山钢铁股份有限公司 filed Critical 宝山钢铁股份有限公司
Priority to KR1020107029400A priority Critical patent/KR101273419B1/ko
Priority to JP2011511958A priority patent/JP5829518B2/ja
Publication of WO2009146638A1 publication Critical patent/WO2009146638A1/zh

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B3/00General features in the manufacture of pig-iron
    • C21B3/04Recovery of by-products, e.g. slag
    • C21B3/06Treatment of liquid slag
    • C21B3/10Slag pots; Slag cars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/05Apparatus features
    • C21B2400/066Receptacle features where the slag is treated

Definitions

  • the present invention relates to the field of metallurgy, and in particular to a metallurgical slag pot for a novel structure for metallurgical casting and a method of manufacturing the same. Background technique
  • the slag tank is a container for steel (iron) slag used in steel smelting.
  • the existing slag tanks are basically containers of steel (iron) slag cast by a conventional casting process.
  • the method of manufacturing a metallurgical slag tank using a conventional casting process has the following problems:
  • the casting slag pot has poor smearability, poor repairability, and high maintenance cost. Thereby, the cast slag pot has a short service life.
  • a metallurgical slag tank of a novel structure having a tank mouth diameter larger than the tank bottom diameter, for holding, pouring molten steel slag or iron slag Tank-shaped container, characterized in that
  • the metallurgical slag tank is formed by splicing an alloy steel plate or a carbon steel plate as a tank wall and a tank bottom of the slag pot.
  • the metallurgical slag tank of the novel structure according to the present invention is characterized in that the thickness of the alloy steel sheet or the carbon steel sheet for the metallurgical slag tank of the novel structure is in the range of 40 mm to 120 mm.
  • a metallurgical slag tank of a novel structure according to the present invention is characterized in that the outer peripheral surface of the metallurgical slag tank of the novel structure is joined with a reinforcing rib (plate).
  • a metallurgical slag tank of the novel structure according to the present invention is characterized in that a "reinforcing flange ring" is formed at the outer periphery of the metallurgical slag tank opening of the novel structure.
  • the "reinforcing flange ring” is a rib (plate) that is spliced and formed on the outer circumference of the can.
  • the metallurgical slag tank of the novel structure according to the present invention is characterized in that the metal slag tank wall inclination angle (slope) of the new splicing structure is in the range of 75 to 55 degrees.
  • the metallurgical slag tank of the novel structure according to the present invention is characterized in that the metallurgical slag tank of the novel structure is formed by using a hot-rolled alloy steel sheet or a hot-rolled carbon steel sheet as a tank wall and a tank bottom.
  • a metallurgical slag tank of the novel structure according to the present invention is characterized in that the metallurgical slag tank tipping force portion of the novel structure adopts a "cross" rib (plate) structure.
  • the metallurgical slag tank of the novel structure according to the present invention is characterized in that the metallurgical slag cannula of the novel structure adopts a "three vertical and two horizontal" plus “cover” rib (plate) structure.
  • the metallurgical slag tank of the novel structure according to the present invention is characterized in that the bottom of the metallurgical slag tank of the novel structure adopts a "T-shaped base" reinforcing rib structure, and the "arc bottom” can also be used to strengthen the rib structure.
  • the bottom of the tank is made of flat alloy steel plate or carbon steel plate as the bottom of the tank of the slag tank, and the bottom of the tank is connected with a stiffener plate, a flat tank
  • the cross-section shape of the reinforcing ribs connected to the lower part of the bottom is like a " ⁇ "-shaped structure.
  • the so-called "arc bottom” structure, gp uses a pressed concave arc-shaped alloy steel plate or carbon steel plate as the bottom of the slag tank to be connected to the tank wall, and a rib plate is spliced to the lower portion of the arc-shaped plate.
  • the cross-sectional shape of the concave arc-shaped alloy steel plate or the carbon steel plate is a concave circular arc line.
  • a metallurgical slag tank of the novel structure according to the present invention is characterized in that the metallurgical slag can trunnion of the novel structure is forged.
  • a method of manufacturing a metallurgical slag pot according to the novel structure of the present invention characterized in that
  • the method includes the following steps:
  • Cutting 3-12 pieces of alloy steel or carbon steel plate forming the bottom of the tank and the wall of the tank as a slag pot by processing and pressing (or rolling or crimp forming), and splicing the steel sheet into a tank mouth larger than the tank Bottom diameter, pot-shaped container for holding, pouring molten steel slag or molten iron slag.
  • the above-mentioned "tank splicing" stage includes: splicing and mounting of the trunnion seat, the can end flange portion, the tilting force receiving portion, the base and the rib and the auxiliary device, and the above-mentioned "trunnion”
  • the machining and installation phase includes: trunnion machining, trunnion machining and trunnion measurement and installation.
  • the cut steel sheets are respectively pressed into a shape for forming a tank body wall and a tank bottom plate.
  • the "X" type groove is used for the docking of the tank wall, the reinforcing flange ring, the tilting force receiving portion, and the longitudinal main rib of the trunn bearing area.
  • the "K” type is used for the bottom plate of the tank base.
  • the other joints are unilateral “V” groove, the groove angle is 35° ⁇ 55°, and the flame is mechanically cut.
  • a method for manufacturing a metallurgical slag tank according to the novel structure of the present invention characterized in that the metallurgical slag tank wall angle of the novel structure is in the range of 75 to 55 degrees, and the tank wall inclination angle is a slag tank wall An angle ( ⁇ ) with the plane parallel to the bottom of the tank.
  • a method for manufacturing a metallurgical slag tank according to the novel structure of the present invention characterized in that, in the tank splicing stage, the metallurgical slag tank mouth trunnion side tilting force portion of the novel structure adopts a "cross" reinforcing rib
  • the plate structure, gp is connected to a longitudinal long rib plate and a transverse rib plate on the sides of the two trunnions of the can body, and is formed into a shape like a "cross" shape.
  • the method for manufacturing a metallurgical slag pot according to the novel structure of the present invention is characterized in that, in the tank splicing stage, the metallurgical slag tank mouth trunnion of the new structure adopts "three vertical and two horizontal" plus " Reinforcing rib structure of the cover plate, gp: three longitudinal ribs and two transverse ribs of different lengths are spliced in the force receiving area of the trunnion, and then covered on the longitudinal ribs and the transverse ribs A rib is attached to the rib.
  • the method for manufacturing a metallurgical slag tank according to the novel structure of the present invention is characterized in that, in the tank splicing stage, the metallurgical slag tank bottom base of the novel structure adopts a flat bottom or a circular bottom structure, and the so-called flat bottom bottom
  • the flat alloy steel plate or the carbon steel plate is used as the bottom of the tank to be connected with the tank wall, and the lower part is connected with the reinforcing rib plate, and the cross-section shape of the reinforcing rib plate of the flat bottom of the flat tank is like a "T" shape structure, so-called "
  • the structure of the arc bottom is: the pressed concave arc steel plate is used as the bottom of the tank and the tank wall is connected, and the lower part is connected with the reinforcing rib plate.
  • a method for manufacturing a metallurgical slag pot according to the novel structure of the present invention characterized in that, in the tank splicing stage, the metallurgical slag tank mouth of the novel structure is joined with a "reinforcement flange" formed by a reinforcing rib Circle,,.
  • a method of producing a metallurgical slag can according to the novel structure of the present invention is characterized in that it is an alloy steel or a carbon steel plate which is a tank bottom and a tank wall of a slag pot, and has a thickness of 40 mm to 120 mm.
  • a method of manufacturing a metallurgical slag pot according to the novel structure of the present invention characterized in that In the process of forming and pressing the steel sheet, the steel sheet is formed by a press forming method (or roll forming or roll forming).
  • the method for manufacturing a metallurgical slag tank according to the novel structure of the present invention is characterized in that, in the tank splicing stage, the slag tank body is connected by using a submerged arc or an electric slag;
  • a submerged arc or an electric slag is used, and the manual arc wire is selected from a 04 mm E5015, E5015-G or J507RH.
  • the pre-heating and the layer temperature (interlayer temperature) control are performed, and the pre-heating and layer temperature control are performed.
  • the self-controlled electric heating method is used to heat the splicing groove and the range of 150mm on both sides of the groove to 10 (TC ⁇ 15 (rC, the interlayer temperature is not lower than the preheating temperature).
  • a method of manufacturing a metallurgical slag pot according to the novel structure of the present invention characterized in that, in the heat treatment stage, the heat treatment process curve is as follows:
  • the metallurgical slag tank of the novel structure employs an alloy steel plate or a carbon steel plate having a thickness ranging from 40 mm to 120 mm as a slag tank wall and a tank bottom.
  • a method of manufacturing a metallurgical slag pot according to the novel structure of the present invention characterized in that the metallurgical slag can trunnion of the novel structure is forged.
  • the metallurgical slag tank of the present invention is spliced into a tank by a splicing process. This greatly reduces environmental pollution.
  • the grain thickness of the steel sheet constituting the metallurgical slag tank wall is uniform, there are almost no defects such as shrinkage, shrinkage, porosity, segregation, crack, non-metallic inclusion, thermal cracking, cold cracking, etc., and since the slag tank wall is formed
  • the grain uniformity of the steel plate is like that of general rolled steel. Therefore, the slag pot has good smearability and repairability, which can greatly prolong the service life of the slag tank, and can eliminate the safety hazards such as slag tank cracking which often occurs in the production site. Significantly reduce costs.
  • FIG. 2 is a perspective view showing another example of a metallurgical slag tank of the novel splicing structure of the present invention.
  • Figure 3 is a graph of the heat treatment process.
  • FIG. 4 is a flow chart showing the manufacturing process of the metallurgical slag tank of the novel structure of the present invention.
  • Figure 5 is a partial cross-sectional view showing the trunnion of the metallurgical slag can of the novel splicing structure of the present invention.
  • Figure 6 is a partial cross-sectional view of the new spliced structure metallurgical slag of the present invention perpendicular to the trunnion.
  • Figure 7 is a partial cross-sectional view as seen from the left side of Figure 6.
  • Figure 8 is a plan view of Figure 6.
  • 1 is the slag tank body
  • 3 is the tank wall
  • 2 is the tank mouth reinforcement ring
  • 4 is the trunnion force zone
  • 5 is the tipping force part "cross” structure
  • 6 is the slag tank base
  • 7 is the ear Axis
  • 8 is the rib plate
  • is the slag tank wall tilt angle (slope).
  • Example 1 a metallurgical slag pot of the novel structure of the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.
  • Example 1 a metallurgical slag pot of the novel structure of the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.
  • Material selection or material selection Choose carbon steel or low alloy steel such as 16Mn (Q345B, C, D), SM490 (B, C) and other wide and thick alloy steel plates 3-8 pieces.
  • the steel sheet has a thickness ranging from 40 mm to 80 mm.
  • the "X" type groove, tank can be used for the docking of the thick plate of the tank, the reinforcing flange of the mouth, the main board of the tilting force receiving part, and the longitudinal main rib of the force receiving area of the trunnion.
  • the bottom of the body base is used
  • H08Mn, H08MnA, H10Mn2 or H08Mn2Si is used for the silk. It can also be made by hand-made C02 gas-protected boring, and the wire is made of H08Mn2Si, ⁇ 1.2mm, and then buried by arc. Manual arc ⁇ using E5015 or E5015-G or J507RH, 04mm 0
  • 1 is a slag pot body, and a wide-plate alloy steel or a thick-plate carbon steel is selected as a tank wall or a tank bottom or a reinforcing rib, and the wide-thick plate alloy steel or thick plate carbon steel is 3- 12 pieces.
  • the steel plate has a thickness ranging from 40 to 120 mm and is manufactured by a splicing method.
  • the can reinforcement ring that is, the can flange.
  • the "reinforcing flange ring” is formed in the form of a reinforcing rib (plate) at the outer periphery of the slag pot mouth to form a rib or a reinforcing rib integrally connected in the longitudinal direction and the transverse direction to solve the problem of the strength and deformation of the mouth, that is, to solve the can mouth High temperature strength to prevent deformation of the tank.
  • the metallurgical slag tank of the novel structure adopts a tank wall slope (slope) (a) in the range of 75 ° to 45 °.
  • the purpose is to solve the problems of high-temperature heat dissipation, high-temperature slag particles on the slag tank wall, the scouring, scouring, penetration, burn-through problems, and slag and slag discharge processes.
  • the rib (plate) structure is combined with “three vertical and two horizontal” plus “cover”.
  • the so-called “three vertical and two horizontal” plus “cover” rib combination (board) structure, gp, trunnion bearing area is composed of three longitudinal stiffeners of different lengths and two transverse stiffeners.
  • the structure, on which the rib cover is spliced in a cover shape, constitutes a combined structure, and the purpose thereof is to solve the problem of the force of the trunnion.
  • the "cross” structure is a “cross” shaped rib (plate) structure.
  • the bottom of the tank (base) adopts a "T-shaped" rib structure.
  • gP using a flat steel plate as the slag tank base and the steel plate as the tank wall, and then splicing the rib plate in the lower part of the flat slag tank base, the flat slag tank base and the rib plate section spliced to the lower part thereof Into the "T" character.
  • the slag can trunnion and the tank body are connected by high-strength bolts, the trunnion is forged, and the material can be carbon steel or alloy steel.
  • the trunnion processing technique is as follows.
  • Tear shaft connection high-strength bolt The trunnion is bolted to the tank body, and the bolt is made of high-strength hexagonal round stud bolt (GB/T70. 1-2000), specification M30 X 70, performance grade 8. 8, material 35CrMo.
  • the ribs include can reinforcement ribs (plates), tank tilting ribs (plates), trunnion reinforcement ribs (plates), and base reinforcement ribs (plates).
  • the purpose is to increase the strength and rigidity of the slag tank, reduce the weight, save materials, uniform stress, and optimize the force.
  • the reinforcing ribs use the cut steel sheets of the present invention.
  • the material re-inspection and inspection standards are as follows.
  • pre-heating and layer temperature (interlayer temperature) control using computer temperature control instrument, heating the splicing groove and the sides of the groove 150mm to 100 °C ⁇ 150 by self-controlled electric heating method °C, the interlayer temperature is not lower than the preheating temperature.
  • ⁇ 10 ⁇ 2 ⁇ 4 ⁇ is used for the filature
  • SJ101 is used for the enamel.
  • connection requirements When using manual electric rafts, use DC power supply, use E5015-G (J507RH) ⁇ 4 ⁇ , splicing current is 150A, and the length of each splicing is controlled to 150 ⁇ 200mm , multi-layer multi-channel rafting, road clearing slag, smashing it with a vibrating gun to relieve stress, and brushing with wire to prevent new defects.
  • the reverse polarity is connected by the DC power source; the use of the wire is taken out of the box, and the same day when the bag is opened; the acceptance of the wire is pressed.
  • the carbon dioxide gas for the splicing shall comply with the GB6052 "industrial liquid carbon dioxide" first-class quality standard, the volume capacity should be greater than 99. 5%, the moisture content should be no greater than 0. 05%.
  • the pressure of carbon dioxide gas is less than I MPa, it is stopped to prevent the generation of spliced pores.
  • FIG. 1 The manufacturing process flow of the novel structural metallurgical slag tank of this embodiment is shown in FIG.
  • the heat treatment process of the metallurgical slag can manufacturing process of the novel structure is as follows.
  • Heat treatment process curve heating temperature: 620 ⁇ 20 ° C; heating rate: 150 ° C / h; holding time: 220-240 min ; cooling rate: 120-150 ° C / h, air cooling below 400 ° C.
  • the volume of the present invention is 5.3 cubic meters, 15 cubic meters, and 18 cubic meters, respectively.
  • the slag pots of the present invention having a volume of 5.3 cubic meters, 15 cubic meters, 18 cubic meters to 33 cubic meters, and the like were separately produced as in the first embodiment.
  • Material selection or material selection Select 8-12 blocks of wide carbon steel such as 20g, 20#, 25#. It is formed by either rolling or roll forming.
  • the steel plate has a thickness ranging from 80 mm to 120 mm; the tank is spliced: an automatic electroslag slag is used; and the metallurgical slag tank of the novel structure adopts a slope of a tank wall having a gradient ( ⁇ ) in the range of 75° to 55°.
  • the bottom of the tank adopts the "arc-bottom” structure, gp, and the concave arc-shaped steel plate is used as the slag tank base and the steel plate as the tank wall is spliced and integrated, and the rib plate is connected to the lower part of the concave arc-shaped slag tank base.
  • Cooling speed 90-120 ° C / h;
  • the ribs are also arranged on the outer side of the bottom of the tank bottom. board.
  • the metallurgical slag tank of the present invention is spliced into a tank by a splicing process.
  • the grain uniformity of the steel plate is like that of general rolled steel. Therefore, the slag pot has good smearability and repairability, which can greatly prolong the service life of the slag tank, and can eliminate the safety hazards such as slag tank cracking which often occurs in the production site. Significantly reduce costs.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Manufacture Of Iron (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Heat Treatment Of Articles (AREA)

Description

一种新型结构的冶金渣罐及其制造方法 技术领域
本发明涉及冶金领域, 具体地, 本发明涉及一种用于冶金铸造的新型结构 的冶金渣罐及其制造方法。 背景技术
渣罐为用于钢铁冶炼时所用的盛钢 (铁)渣的容器。 迄今为止, 现有渣罐 基本上为采用传统铸造工艺铸造而成的盛钢 (铁) 渣的容器。
采用传统的铸造工艺制造冶金渣罐的方法存在问题如下:
一. 污染环境。 众所周知, 铸造是机械加工领域中环保问题最大, gp, 所 谓 "最脏" 的行业之一。 渣罐的铸造同样如此。 例如, 在向沙坑倾翻铸余液态 钢渣或铁渣的过程中, 大量的粉尘烟气升腾, 弥漫空间, 作业环境恶劣; 现场 污染可能导致电器设备故障频发; 钢渣及废气中的有害气体、 有机碳 (T0C ) 及重金属 (镉、 铬、 铜、 汞、 镍、 铅、 锌) 的排放浓度较高, 严重影响员工的 身体健康。 从而, 由渣罐的铸造带来的环境污染问题很大。
二. 存在安全隐患。 因铸造渣罐晶粒较一般轧制钢材粗大(因未经过热压 力加工, 晶粒仍为原始状态) , 粗细不均匀 (因冷却条件不同所致) , 使得大 型冶金设备铸造不可避免地存在如缩孔、 缩松、 气孔、 偏析、 裂纹、 非金属夹 杂、 热裂、 冷裂等的各种缺陷, 在制造、 使用过程的生产现场经常出现渣罐开 裂, 给生产及操作人员造成安全隐患。
三.基于上述原因,使得大型冶金设备铸造不可避免地存在如缩孔、缩松、 气孔、 偏析、 裂纹、 非金属夹杂、 热裂、 冷裂等的各种缺陷, 严重影响其使用 性能。
四. 基于上述原因, 导致铸造渣罐的可悍性差、可修复性差, 维修成本大。 从而, 使得铸造渣罐使用寿命短。
五. 同样基于渣罐的铸造总是不可避免地存在各种缺陷的原因, 使得所述 渣罐在使用数月之后既得报废。 另一方面, 由于渣罐使用量很大, 例如, 以我 国内某大型钢铁企业为例, 近年来仅 5. 3立方米容量的渣罐即需年耗 1 0 0多 个, 导致目前的铸造渣罐的使用成本极大, 不利于降本增效。
发明内容
为克服上述问题, 本发明的新型结构的冶金渣罐的技术方案如下: 一种新型结构的冶金渣罐, 为一罐口口径大于罐底直径、 用于盛放、 倾倒 熔融态钢渣或铁渣的罐形容器, 其特征在于,
所述冶金渣罐系将合金钢板或碳素钢板作为所述渣罐的罐壁及罐底悍接 而成。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐用合金钢板或碳素钢板的厚度在 40mm至 120mm的范围。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐外周面悍接有加强筋 (板) 。 根据本发明的新型结构的冶金渣罐, 其特征在于, 在所述新型结构的冶金 渣罐口外周处悍接形成有 "加强法兰圈" 。 所述 "加强法兰圈" 即为悍接、 形 成于罐口外周的加强筋 (板) 。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型悍接结构冶金 渣罐罐壁倾斜角 (坡度) 在 75度至 55度 的范围。
渣罐的罐壁倾斜角(坡度), gp,渣罐罐壁与平行于罐底平面的夹角( a )。 根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐系采用热轧合金钢板或热轧碳素钢板作为罐壁及罐底悍接而成。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐倾翻受力部采用 "十字架"加强筋(板) 结构。 所谓 "十字架"加强筋(板) 结构, gp : 罐体两耳轴侧面各悍接一块纵向长加强筋板与一块横向加强筋板, 形成状如 "十字架" 的加强筋 (板) 结构。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐耳轴受力区采用 "三纵二横" 加 "盖板" 加强筋 (板) 结构。
所谓 "三纵二横"加 "盖板"加强筋 (板) 结构, gp, 在渣罐的耳轴受力 区,悍接三块长短不一的纵向加强筋板和二块横向加强筋板之后, 再在其上外 侧以盖合状, 悍接一块加强筋板。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐罐底采用 " T型底座" 加强筋板结构, 也可用 "圆弧底" 加强筋板结构。
所谓 " τ型底座"结构, gp, 罐底采用平板状合金钢板或碳素钢板作为所 述渣罐的罐底与罐壁悍接, 平板状罐底下部悍接有加强筋板, 平板状罐底与其 下部悍接的加强筋板截面形状如 " τ " 字形结构。
所谓 "圆弧底"结构, gp, 采用压制的下凹圆弧状合金钢板或碳素钢板作 为所述渣罐的罐底与罐壁悍接, 圆弧状板下部悍接有加强筋板。所述下凹圆弧 状合金钢板或碳素钢板截面形状呈下凹圆弧线。
根据本发明的新型结构的冶金渣罐, 其特征在于, 所述新型结构的冶金渣 罐耳轴采用锻造成型。
本发明的目的又在于, 提供一种新型结构的冶金渣罐的制造方法。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,
所述方法包括下述步骤:
钢板切割一坡口加工与钢板压形一装配一罐体悍接一
热处理一耳轴部加工及安装一成品,
切割合金钢或碳素钢钢板 3-12块, 以加工压形法 (或卷制或卷压成形) 形成作为渣罐的罐底及罐壁, 将所述钢板悍接成罐口口径大于罐底直径、用于 盛放、 倾倒熔融态钢渣或铁水渣的罐形容器。
又, 参见图 5, 上述 "罐体悍接"阶段 包括: 耳轴座、 罐口法兰部、 倾 翻受力部、底座及筋板及辅助装置等的悍接与安装,上述"耳轴部加工及安装" 阶段包括: 耳轴座加工, 耳轴孔加工及耳轴的测量、 安装。 根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,
在所述坡口加工与钢板压形阶段,将切割的钢板分别压制成用于形成罐体 罐壁、 罐体底座底板的形状。 在罐壁对接、 加强法兰圈、 倾翻受力部、 耳轴受 力区纵向主筋板等的悍接采用 " X "型坡口, 罐体底座底板的悍接采用 " K "型 坡口, 其它悍接处采用单边 " V " 型坡口, 坡口角度 35°〜55°, 火焰加机械方 法切割。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,所述新型结 构的冶金渣罐罐壁倾斜角在 75度至 55度 的范围, 所述罐壁倾斜角为渣罐罐 壁与平行于罐底平面的夹角 ( α ) 。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述罐体 悍接阶段, 所述新型结构的冶金渣罐口耳轴侧倾翻受力部采用 "十字架"加强 筋板结构, gp, 在罐体两耳轴侧各悍接一块纵向长筋板与一块横向筋板, 形成 状如 "十字" 形结构。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,所述加强筋 板也可使用本发明所述切割的钢板。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述罐体 悍接阶段, 所述新型结构的冶金渣罐口耳轴受力区采用"三纵二横"加"盖板" 的加强筋板结构, gp : 在耳轴受力区悍接三块长短不一的纵向筋板和二块横向 筋板, 再在所述纵向筋板和横向筋板上以盖合状悍接一块加强筋板。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述罐体 悍接阶段,所述新型结构的冶金渣罐罐底底座采用平底或圆弧底结构, 所谓平 底罐底采用平板状合金钢板或碳素钢板作为罐底与罐壁悍接,且下部悍接有加 强筋板, 平板状罐底与其下部悍接的加强筋板截面形状如 " T " 字形结构, 所 谓 "圆弧底 "结构即: 采用压制的下凹型圆弧钢板作罐底与罐壁悍接, 下部悍 接有加强筋板。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述罐体 悍接阶段,所述新型结构的冶金渣罐口处悍接有由加强筋板形成的 "加强法兰 圈,, 。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于, 作为渣罐的 罐底及罐壁的合金钢或碳素钢钢板系热轧钢板, 且厚度为 40mm至 120mm的范 围。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述坡口 加工与钢板压形阶段, 所述钢板压形采用加工压形法 (或卷制或卷压成形) 。 根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述罐体 悍接阶段, 所述渣罐罐体的悍接采用埋弧悍或电渣悍;
悍丝选用 H08Mn、 H08MnA、 H10Mn2或 H08Mn2S i之一种;或,
采用手工 C02气保悍打底, 悍丝选用 H08Mn2S i, Φ 1. 2mm, 然后
进行埋弧悍或电渣悍,所述手工电弧悍悍丝选用 04mm 的 E5015、E5015-G 或 J507RH之一种。
根据本发明的新型结构的冶金渣罐的制造方法, 在所述罐体悍接阶段, 悍 接进行悍前预热及层温(层间温度)控制, 所述悍前预热及层温控制采用电脑 温度控制仪器, 以自控电加热方法加热悍接坡口及坡口两侧 150mm 范围内至 10(TC〜15(rC, 层间温度不低于预热温度。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,在所述热处 理阶段, 热处理工艺曲线如下:
加热温度: 620 ± 20°C, 升温速度: 150°C /h, 保温时间: 220-240min, 降温速度: 100〜150°C /h, 40CTC以下空冷。 所述新型结构的冶金渣罐 采用厚度在 40mm至 120mm的范围的合金钢板或碳素钢板作为渣罐罐壁及罐底。
根据本发明的新型结构的冶金渣罐的制造方法, 其特征在于,所述新型结 构的冶金渣罐耳轴采用锻造成型。 根据本发明的新型悍接结构冶金渣罐及其制造方法,所述冶金渣罐系采用 悍接工艺将切割的钢板悍接成罐。 由此大幅减少环境污染。 由于构成所述冶金 渣罐罐壁钢板的晶粒粗细均匀, 几乎不存在缩孔、 缩松、 气孔、 偏析、 裂纹、 非金属夹杂、 热裂、 冷裂等缺陷, 且由于构成渣罐罐壁的钢板晶粒均匀度如同 一般轧制钢材,因此,渣罐的可悍性和可修复性好,可大大延长渣罐使用寿命, 并可消除生产现场中经常出现的渣罐开裂等安全隐患, 大幅降低成本。 附图的简单说明
图 1为本发明的新型悍接结构冶金渣罐一例外观立体图。 图 2为本发明的新型悍接结构冶金渣罐又一例外观立体图。
图 3为 热处理工艺曲线图。
图 4为本发明的新型结构的冶金渣罐的制造工艺流程图。
图 5为本发明的新型悍接结构冶金渣罐耳轴处的部分剖视图。
图 6为本发明的新型悍接结构冶金渣垂直于耳轴处的部分剖视图。
图 7为从图 6左侧看的局部剖视图。
图 8为图 6的俯视图。
图中, 1为渣罐本体, 3为罐壁; 2为罐口加强圈; 4为耳轴受力区; 5为 倾翻受力部 "十字架" 结构; 6为渣罐底座; 7为耳轴; 8为加强筋板, α为 渣罐罐壁倾斜角 (坡度) 。 具体实施方式
以下, 参照附图, 以具体实施例详细说明本发明的新型结构的冶金渣罐及 其制造方法。 实施例 1
(1) 选材或材料选型: 选用碳钢或低合金钢如 16Mn (Q345B、 C、 D) , SM490 (B、 C) 等宽厚合金钢板 3-8块。 所述钢板厚度范围为 40mm至 80mm。
(2) 下料及坡口加工: 罐体厚板对接、 包口加强法兰、 倾翻受力部主板、 耳轴受力区纵向主筋板等的悍接都采用 "X" 型坡口, 罐体底座底板坡口采用
"K"型, 其它采用单边 "V"坡口。 坡口角度 35°〜55°。用火焰加机械方法(自 动) 切割。
(3) 钢板压形 (卷制) : 采用常温冷加工压形法。
(4)罐体(筒体)悍接:采用自动埋弧悍。悍丝用 H08Mn、 H08MnA、 H10Mn2 或 H08Mn2Si等。也可采用手工 C02气保悍打底,悍丝选用 H08Mn2Si, Φ1.2mm, 然后用埋弧悍等方法。 手工电弧悍采用 E5015或 E5015-G或 J507RH, 04mm0
(5) 耳轴座采用 "三纵二横加盖板"及 "十字架结构" 设计。 安装及悍 接时应掌握 "先纵后横" , "先里后外" 的原则。 ( 6 ) 无损检测选用 JB/T4730-2005和 GB/T2970-91 《中厚钢板超声波检 验方法》 或 GB /T 6402 -91。
如图所示, 1为渣罐本体, 选用宽厚板合金钢或厚板碳素钢作为罐壁或罐 底或加强筋板, 所述宽厚板合金钢或厚板碳素钢 3- 12块。 所述钢板厚度范围 为 40讓至 120mm, 用悍接方法制造而成。
2为罐口加强圈, 也即罐口法兰。 所述 "加强法兰圈" 即以加强筋 (板) 形式在渣罐口外周缘处形成纵横向一体连接的加强筋条或加强筋片,以解决包 口强度及变形问题, 即解决罐口高温强度, 防止罐口变形。
3为罐壁。 所述新型结构的冶金渣罐采用罐壁坡度(坡度) ( a )在 75°〜 45°范围。 所述渣罐的罐壁倾斜角 (坡度) , gp, 渣罐罐壁与平行于罐底平面 的夹角 ( α ) 。 其目的是解决高温散热、 高温渣粒对渣罐壁的粘罐、 冲刷、 熔 透、 烧穿问题及装渣、 卸渣等工艺操作过程中的问题。
4为耳轴受力区。 采用 "三纵二横" 加 "盖板" 组合加强筋 (板) 结构。 所谓 "三纵二横"加 "盖板"加强筋组合 (板) 结构, gp, 耳轴受力区悍接有 由三块长短不一的纵向加强筋板和二块横向加强筋板构成的结构, 再在其上, 以盖合状悍接一加强筋盖板, 构成组合结构, 其目的是解决耳轴受力问题。
5为倾翻受力部。 采用 "十字架"加强筋 (板) 结构。 为适用于各种工况 条件下 (如倾翻车、 行车等) 的倾翻设备。 所述 "十字架" 结构即为 "十字" 形加强筋 (板) 结构。
6为渣罐底座。 罐底 (底座) 采用 " T型"筋板结构。 gP, 用平板状钢板 作为渣罐底座与作为罐壁的钢板悍接一体,再在平板状渣罐底座下部悍接加强 筋板, 平板状渣罐底座与悍接于其下部的加强筋板截面成 " T " 字状。
7、 为耳轴。 渣罐耳轴与罐体采用高强螺栓连接, 耳轴采用锻造成型, 材 料可选用碳钢或合金钢。
在本实施例中, 耳轴加工技术要求如下。
渣罐耳轴选用 35 #钢锻件,满足 GB/T 699-1988 《优质碳素钢技术条件》。 (毛坯、 半成品) 采用 UT探伤, 耳轴探伤符合标准 GB/T6402-91要求, II级 (含 II级) 以上合格。 锻造按 JB/T5000. 8-1998《锻件通用技术条件》 V组标 准验收。锻件需要经过正火 +回火的方法热处理,最终达到硬度 HB = 131〜187。 热处理曲线如图 4所示。
耳轴连接高强螺栓: 耳轴与罐体采用螺栓联结, 螺栓采用高强度内六角圆 柱头螺栓 (GB/T70. 1-2000 ) , 规格 M30 X 70 , 性能等级 8. 8, 材料 35CrMo。
8为加强筋板。 加强筋包括罐口加强筋 (板) 、 罐体倾翻加强筋 (板) 、 耳轴受力区加强筋 (板) 及底座加强筋 (板) 等。 目的是为了增加渣罐强度与 刚度、 减轻重量、 节省材料、 均布应力、 优化受力等。 加强筋板使用本发明的 切割钢板。 在本实施例中, 材料复验及检验标准如下。
Figure imgf000009_0001
在本实施例中, 悍前预热及层温(层间温度)控制: 采用电脑温度控制仪 器, 以自控电加热方法加热悍接坡口及坡口两侧 150mm范围内至 100 °C〜150 °C,层间温度不低于预热温度。罐体主体悍缝采用埋弧自动悍接方法或者电渣 悍接方法进行悍接时, 悍丝采用 Η10Μη2 Φ 4ηιηι, 悍剂采用 SJ101。
( 12 ) 悍接要求: 采用手工电悍条悍接时, 用直流电源, 采用 E5015— G (J507RH) Φ 4ηιηι悍条,悍接电流为 150A,每根悍条悍接长度控制在 150〜200mm, 多层多道悍, 道道清渣, 悍完一道用振动枪对其进行消应力处理, 并用钢丝刷 刷干净防止出现新缺陷。
在本实施例中, 采用二氧化碳手工半自动方法进行角悍缝悍接时,用直流 电源反极性悍接; 悍丝使用采取即开即用原则, 当天开包当天用完; 悍丝的验 收按相关标准。 用于悍接的二氧化碳气体应符合 GB6052《工业液体二氧化碳》 一级质量标准, 体积容量应大于 99. 5%, 水份含量应不大于 0. 05%。 当瓶内的 二氧化碳气体压力为小于 I MPa时停止使用, 防止产生悍接气孔。
本实施例的新型结构冶金渣罐的制造工艺流程如图 5所示。
本实施例中, 如附图 3所示, 新型结构的冶金渣罐制造工艺的热处理工艺 如下。
热处理工艺曲线: 加热温度: 620 ± 20°C ; 升温速度: 150°C /h; 保温时 间: 220-240min; 降温速度: 120- 150°C /h, 400°C以下空冷。
由此, 分别制得本发明的其体积为 5. 3立方米、 15立方米、 18立方米至
33立方米的渣罐。
实施例 2
除了下述之外, 其他如同实施例 1, 分别制得本发明的其体积为 5. 3立方 米、 15立方米、 18立方米至 33立方米的渣罐等。
选材或材料选型: 选用如 20g,20#, 25#等宽厚碳素钢板 8-12块。 采用或 卷制或卷压成形法成形。 所述钢板厚度范围为 80mm至 120mm; 罐体悍接: 采 用自动电渣悍;所述新型结构的冶金渣罐采用坡度 ( α ) 在 75°〜55°范围的罐 壁倾斜度。 罐底采用 "圆弧底"结构, gp, 用下凹圆弧状钢板作为渣罐底座与 作为罐壁的钢板悍接一体, 再在下凹圆弧状渣罐底座下部悍接有加强筋板。
降温速度: 90-120°C /h; 在罐口外周缘、 耳轴受力区、 倾翻受力部及罐底 处设置有加强筋板之外, 在罐底外侧周缘也设置有加强筋板。
根据本发明的新型悍接结构冶金渣罐及其制造方法,所述冶金渣罐系采用 悍接工艺将轧制的钢板悍接成罐。 由此大幅减少环境污染。 由于构成所述冶金 渣罐罐壁钢板的晶粒粗细均匀, 几乎不存在缩孔、 缩松、 气孔、 偏析、 裂纹、 非金属夹杂、 热裂、 冷裂等缺陷, 且由于构成渣罐罐壁的钢板晶粒均匀度如同 一般轧制钢材,因此,渣罐的可悍性和可修复性好,可大大延长渣罐使用寿命, 并可消除生产现场中经常出现的渣罐开裂等安全隐患, 大幅降低成本。

Claims

权 利 要 求
1. 一种新型结构的冶金渣罐, 为一罐口口径大于罐底直径的用于盛放、 倾倒熔融态钢渣或铁渣的罐形容器, 其特征在于,
所述冶金渣罐系用合金钢板或碳素钢板作为渣罐罐壁及渣罐罐底,悍接而 成。
2. 如权利要求 1所述的新型结构的冶金渣罐, 其特征在于, 在所述新型 结构的冶金渣罐外周面悍接有加强筋板。
3. 如权利要求 2所述的新型结构的冶金渣罐, 其特征在于, 在所述新型 结构的冶金渣罐口外周缘处悍接有加强筋板, 形成 "加强法兰圈" 。
4. 如权利要求 1所述的新型结构的冶金渣罐, 其特征在于, 所述新型结 构的冶金渣罐罐壁倾斜角在 75度至 55度 的范围, 所述罐壁倾斜角为渣罐罐 壁与平行于罐底平面的夹角。
5. 如权利要求 2所述的新型结构的冶金渣罐, 其特征在于, 在渣罐罐体 的两耳轴侧倾翻受力部采用 "十字架" 形加强筋板结构, gp, 在罐体两耳轴 侧各悍接一块纵向长筋板与一块横向筋板, 形成状如 "十字" 形结构。
6.如权利要求 2所述的新型结构的冶金渣罐,其特征在于, 在所述新型结 构的冶金渣罐耳轴受力区采用 "三纵二横"加 "盖板" 的加强筋结构, gp : 在 耳轴受力区悍接三块长短不一的纵向筋板和二块横向筋板,再在所述纵向筋板 和横向筋板上以盖合状悍接一块加强筋板。
7. 如权利要求 1所述的新型结构的冶金渣罐, 其特征在于, 所述新型结 构的冶金渣罐罐底为平底或圆弧底结构,所谓平底罐底采用平板状合金钢板或 碳素钢板作为所述渣罐的罐底与罐壁悍接, 且下部悍接有加强筋板,平板状罐 底与其下部悍接的加强筋板截面形状如 " T " 字形结构, 所谓 "圆弧底" 结构 即: 采用压制的下凹型圆弧钢板作罐底。
8.—种新型结构的冶金渣罐的制造方法, 其特征在于, 所述方法包括下述 步骤:
钢板切割一坡口加工与钢板压形一装配一罐体悍接一 热处理一耳轴部加工及安装一成品,
切割合金钢或碳素钢钢板 3-12块, 加压成形作为渣罐的罐底及罐壁, 将 所述钢板悍接成罐口口径大于罐底直径、用于盛放、倾倒熔融态钢渣或铁水渣 的罐形容器。
9. 如权利要求 8所述的冶金渣罐的制造方法, 其特征在于, 在所述坡口 加工与钢板压形阶段, 将钢板分别压制成用于形成罐体罐壁、罐体底座底板的 形状, 在罐壁对接、 加强法兰圈、 倾翻受力部、 耳轴受力区纵向主筋板等的悍 接采用 " X "型坡口, 罐体底座底板的悍接采用 " K "型坡口, 其它悍接处采用 单边 " V " 型坡口, 坡口角度 35°〜55°。
10. 如权利要求 9所述的新型结构的冶金渣罐的制造方法, 其特征在于, 所述新型结构的冶金渣罐罐壁倾斜角在 75度至 55度 的范围, 所述罐壁倾斜 角为渣罐罐壁与平行于罐底平面的夹角。
1 1.如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述罐体悍接阶段, 所述新型结构的冶金渣罐口耳轴侧倾翻受力部采用 "十 字架"加强筋板结构, gp, 在罐体两耳轴侧各悍接一块纵向长筋板与一块横向 筋板, 形成状如 "十字" 形结构。
12.如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述罐体悍接阶段,所述新型结构的冶金渣罐口耳轴受力区采用"三纵二横" 加 "盖板"的加强筋板结构, gp : 在耳轴受力区悍接三块长短不一的纵向筋板 和二块横向筋板, 再在所述纵向筋板和横向筋板上以盖合状悍接一块加强筋 板。
13. 如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述罐体悍接阶段,所述新型结构的冶金渣罐罐底底座采用平底或圆弧底结 构,所谓平底罐底采用平板状合金钢板或碳素钢板作为所述渣罐的罐底与罐壁 悍接, 且下部悍接有加强筋板, 平板状罐底与其下部悍接的加强筋板截面形状 如 " T " 字形结构, 所谓 "圆弧底" 结构即: 采用压制的下凹型圆弧钢板作罐 底, 下部悍接有加强筋板。
14. 如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述罐体悍接阶段,所述新型结构的冶金渣罐口处悍接有由加强筋板形成的 "加强法兰圈" 。
15.如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 作为渣罐的罐底及罐壁的合金钢或碳素钢钢板系热轧钢板, 厚度为 40mm 至 120mm的范围。
16. 如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述坡口加工与钢板压形阶段, 所述钢板压形采用加工压形法(或卷制或卷 压成形) 。
17. 如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述罐体悍接阶段, 所述渣罐罐体的悍接采用埋弧悍或电渣悍;
悍丝选用 H08Mn、 H08MnA、 H10Mn2或 H08Mn2S i之一种;或,
采用手工 C02气保悍打底, 悍丝选用 H08Mn2S i, Φ 1. 2mm, 然后
进行埋弧悍或电渣悍,所述手工电弧悍悍丝选用 04mm 的 E5015、E5015-G 或 J507RH之一种。
18. 如权利要求 8所述的新型结构的冶金渣罐的制造方法,在所述罐体悍 接阶段, 悍接进行悍前预热及层温控制, 所述悍前预热及层温控制采用电脑温 度控制仪器自控电加热方法加热悍接坡口及坡口两侧 150mm范围内到 100°C〜 150°C, 层间温度不低于预热温度。
19. 如权利要求 8所述的新型结构的冶金渣罐的制造方法, 其特征在于, 在所述热处理阶段, 所述热处理工艺曲线如下:
加热温度: 620 ± 20°C, 升温速度: 150°C /h, 保温时间: 220-240min, 降温速度: 100〜150°C /h, 40CTC以下空冷。
20.如权利要求 8所述的新型悍接结构冶金渣罐的制造方法,其特征在于, 所述新型结构的冶金渣罐口耳轴采用锻造成型。
PCT/CN2009/072066 2008-06-03 2009-06-01 一种新型结构的冶金渣罐及其制造方法 WO2009146638A1 (zh)

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