PDF《Machinery》

机械结构钢 厚板用户手册 Machinery Structural Heavy Plate

1 5m 厚板产线简介

1 产品和产线特征

2 产品介绍

3 B-WELDY 系列高强度钢板

4 CF 系列高强度钢板

6 BPM 系列高强度钢板

8 使用说明

10 弯曲性能

10 剪切

12 切割

12 焊接

14 抗裂纹起裂和止裂能力

18 钢板的尺寸、外形、重量及允许偏差

20 加工成型

20 INTRODUCTION OF 5-METER HEAVY PLATE MILL

1 PRODUCTS AND PROCESS FEATURES

2 INTRODUCTION OF MAIN PRODUCTS

3 B-WELDY Series High Strength Heavy Plates

5 CF Series High Strength Heavy Plates

7 BPM Series High Strength Heavy Plates

9 APPLICATION METHODS

10 Bending

11 Shears

13 Cutting

13 Welding

15 ANTI CRACK CAPACITY

19 DIMENSION

20 MACHINE-SHAPING

20 目录CONTENTS

2 宝钢 5m 厚板产线于

2005 年投产 , 年生产能力为

180 万吨.

厚板产线的主要装备由德国 SMS 和SIE 提供, 热处理炉由 LOI 提供. 厚 板产线包括万吨轧机、 预矫直机、 直接淬火装备、 层流冷却装备、 热矫直机、 热处理炉、 剪切机和在线探伤等装备. 厚板产线具有先进的 控制技术如轧制板形控制、 高精度厚度公差控制、 大冷速均匀冷却技术、 高效矫直、 无氧化均匀加热等先进技术, 可以实现用户对表面质量、 板形、 力学性能均匀性等严苛要求. 厚板产线生产的主要产品包括机械结构钢厚板、 高等级船舶和海洋平台用钢、 压力容器和核电用户用钢、 管线钢等. 厚板产品已广泛应 用于国家先进装备制造业和重大工程. 5m 厚板产线简介 INTRODUCTION OF 5-METER HEAVY PLATE MILL

3 Baosteel 5-meter heavy plate mill was established in March 2005, with the annual production capacity of 1.8 million tons. Its main production equipments are provided by German SMS and SIE. The 5-meter heavy plate mill extensively adopts the state- of-the-art heavy plate technologies and facilities in the world, including high precision of rolling technique, TMCP/DQ technology, automatic control technique for strong leveling process, automatic cutting technique, automatic online ultrasonic detective tech- nique, non-oxidation heat treatment technique, pre-leveler, comprehensive plate surface measuring apparatus and automatic marking, etc. In this way, requirements of high dimensional accuracy and mechanical property for high grade heavy steel plates from customers can be satisfied. The heavy plate mill can produce high strength machinery structure steel, hull structural steel plates, offshore structural steel plates, oil and gas transportation pipeline steel plates, high strength construction structural steel plates and steel plates for boilers and pressure vessels. In the past decade Baosteel has exerted utmost effort to develop and supply high-quality heavy plates to meet customers'

demands. We are continuously expanding our products types, improving our products quality.

4 制造工艺流程 Process Flow High pressure Water descaler UT UT Manual marking &

stamping Finished product Warehouse Finished product warehouse Plates in the as-rolled condition Delivery on heat Treatment condition Marking &

stamping Crop shearing Flame cutting Roughing mill Finishing mill Cooling bed Continuous reheating furnace Batch furnace Hot plate leveller Pre-leveller

5 Iron ore Converter steelmaking Blast furnace UT Marking &

stamping Marking &

stamping Cold plate leveller Press leveller Double side trimming shearing Slitting shearing Dividing shearing &

sampling Dividing flame cutting &

sampling Shot blasting Heat treatment furnace Quenching Outsourcing slab Slab yard Slab scarfing &

checking Continuous Casting Coal (coke)

6 产品和产线特征 产品交货状态及可供规格 机械结构钢厚板的交货状态包括: 轧态、 控制轧制、 TMCP、 直接淬火、 直接淬火+ 回火、 正火、 离线淬火+ 回火等. 最大可供厚度: 200mm,最大可供宽度 4800mm,最大可供长度 25m,最大单重 22.5 吨. 宝钢可供屈服强度 1300MPa 级超高强度钢板. 高纯净度钢水 宝钢采用

300 吨转炉、LF、RH 等装备以及 BRP 等技术,可以保证钢水的残余的 [P]≤50ppm、 [S]≤10ppm、[O]≤20ppm 和[H]≤1.5ppm,杂质元素含量低,钢水纯净度高. 板坯质量好 连铸坯采用电磁搅拌和轻压下技术, 实现中心偏析、 夹杂物和内部质量控制. 良好的表面质量 钢板表面缺陷深度 ≤0.2mm, 深度在 0.05-0.2mm 之间的缺陷占表面积比例 ≤2%. 表面粗糙度 ≤70μm. 板形控制技术 钢板采用 CVC 轧机和自动化系统控制轧态板形. 通过不同冷却段的水量控制和矫直技术控制 DQ、 TMCP 和热处理态板形. 钢板的不平度可达到 3mm/m. 尺寸精度控制技术 精轧机装备有 AGC 系统以控制钢板厚度精度. 长度方向的厚度变化量不超过 0.5mm. 供货钢 板的厚度进阶为 0.1mm, 宽度进阶为 1mm. PRODUCTS AND PROCESS FEATURES Product delivery capability Many delivery conditions can be available: as-rolled, control rolled, TMCP, direct quenched (DQ), direct quenched and tempered, normalized, quenched &

tempered, etc. Max. thickness: 200mm;

Max. width: 4800mm;

Max. length: 25m;

Max. unit weight: 22.5 tons And high-strength steel plate with yield stress of 1300MPa is also available in Baosteel. High purity of steel With advanced steel-making equipment and technology, high purity of the steel plates can be ensured by desulfurization of liquid iron, converter dephosphorization and ladle refining (RH-MFB, LF, RHOB, KIP/CAS). Excellent metallurgical properties of the slab Center segregation, inclusion, porosity and internal crack can be effectively controlled by electromagnetic stirring and soft reduction technique. Excellent surface quality Depth of scale on the surface of steel plate ≤0.2mm;

Area with defect depth from 0.05mm to 0.2mm ≤2%;

Surface roughness after shot-blasting ≤70um. Plate shape control technology CVC plate profile control technique. Multi-point setting and adaptation between passes can be implemented by high accuracy setting model. Highly-accurate dimension control The finishing mill stand is equipped with absolute AGC and closed-approached gauge me- ter type monitor AGC functions to improve thickness control accuracy. Thickness variation in length is less than 0.5mm. For ordering, the minimum thickness unit is 0.1mm, and the minimum length and width unit is 1mm.

7 产品介绍 INTRODUCTION OF MAIN PRODUCTS B-WELDY 系列 CF 系列 BPM 系列 B-WELDY Series CF Series BPM Series 应用范围:混凝土泵车的臂架、车架、 支腿、转台;

工程起重机的吊臂、转台、 车架;

履带式起重机的拉板、转台、履 带梁;

港口起重机的臂架;

正面吊、叉车、风机、自卸车等 应用范围:煤矿液压支架的顶梁、掩护 梁、连杆、底座;

铲斗、工程车辆等 应用范围:船用浮吊、港口机械等 Application: Boom, frame, rotating floor of concrete pump vehicle, hoist- ing machinery;

blade of industry fan, machinery vehicle etc. Application: Top beam, gob shield, bed frame of coal mine hydraulic Sup- porter, machinery vehicle etc. Application: Floating Crane of ship, Port machinery etc.

8 B-WELDY 系列高强度钢板 应用范围 混凝土泵车的臂架、 车架、 支腿、 转台;

工程起重机的吊臂、 转台、 车架、 ;

履带式起重机的拉板、 转台、 履带梁;

港口起重机的臂架;

正面吊、 叉车、 风机、 自卸车等 牌号 BWELDY700QL2/

4、 BWELDY700QL2/4-LC (低碳当量) 、 BWELD900QL2/

4、 BWELDY900QL2/4-LC (低碳当量) 、 BWELDY960QL2/

4、 BWELDY1100QL2/4 交货状态 离线淬火+ 回火 化学成分 符合 EN10025-6 或GB/T16270 规定 C % max. Si % max. Mn % max. P % max. S % max. Ti % max. V % max. 0.22 0.86 1.80 0.025 0.012 0.07 0.14 机械性能 强度级别 MPa 厚度 mm Rp0.2 MPa Rm MPa A5 % AKV J CEV %

700 8-50 ≥700 780-940

14 -20℃

47 ≤0.55(低碳当量产品 ≤0.43) >

50-100 ≥660 760-940

14 -40℃

34 ≤0.60

900 8-50 ≥900 940-1150

12 -20℃

40 ≤0.60(低碳当量产品 ≤0.58) >

50-80 ≥840 880-1150

12 -40℃

30 960 8-50 ≥960 980-1150

12 -20℃

40 ≤0.60 >

50-60 ≥900 920-1150

12 -40℃

30 >

60-80 ≥860 880-1150

12 -40℃

27 1100 8-30 ≥1150 ≥1250

20 -20/-40℃ 30/27 8-25mm ≤0.60;

>

25mm ≤0.75 注:B-WELDY 系列高强钢具有良好的表面质量、板形和内质,力学性能均匀性良好. 注:CEV = C+Mn/6+Cr/5+Mo/5+V/5+Ni/15+Cu/15

9 B-WELDY Series High Strength Heavy Plates Application Boom, frame, rotating floor of concrete pump vehicle, hoistin........