CN112317537B - 一种复杂高筋薄板的轧制成形工艺 - Google Patents

一种复杂高筋薄板的轧制成形工艺 Download PDF

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CN112317537B
CN112317537B CN202011151917.3A CN202011151917A CN112317537B CN 112317537 B CN112317537 B CN 112317537B CN 202011151917 A CN202011151917 A CN 202011151917A CN 112317537 B CN112317537 B CN 112317537B
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CN112317537A (zh
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黄志权
郭浩
来洪玉
王军朋
赵之勤
张涛
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Taiyuan University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02Shape or construction of rolls
    • B21B27/03Sleeved rolls
    • B21B27/032Rolls for sheets or strips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28Control of flatness or profile during rolling of strip, sheets or plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B39/00Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/34Arrangements or constructional combinations specifically designed to perform functions covered by more than one of groups B21B39/02, B21B39/14, B21B39/20

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  • Mechanical Engineering (AREA)
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Abstract

本发明属于材料成型领域,具体涉及一种复杂高筋薄板的轧制成形工艺。现如今制备高筋薄板的生产工艺缺乏,无法达到快速大量生产。本方法通过选择合适的辊套配对轧辊,咬入坯料,利用辊套的凹槽进行轧制,根据生产要求高效生产多种类型、形状加强筋体板材,提升板材整体性能的同时形成强化筋来提升整体结构强度,具体包括下输送辊、上定位辊,轧辊,辊套以及轧制成型方法。本发明是安全、快速制备高筋薄板的一种轧制成型方法,解放了人力,实现半自动化、批量化生产,提高了生产效率,实现了绿色生产,具有广泛应用前景。

Description

一种复杂高筋薄板的轧制成形工艺
技术领域
本发明属于金属塑性成型领域,具体涉及一种复杂高筋薄板的轧制成形工艺。
背景技术
高筋板材应用广泛,航空航天、武器装备等诸多部件在追求轻量化的同时又有着较高的强度和韧性要求,需要在板材上设有加强筋。但目前高筋薄板的生产工艺有诸多缺陷,传统铸造高筋薄板耗费巨大人力,不利于生产的连续性,生产效率低,且板材内部极易出现不均匀,降低板材的力学性能,在冲击荷载或者长期负载作用下,仍然存在损伤的潜在风险,影响设备的安全性能及使用寿命。
如何在提高高筋板材性能的同时实现高效率、自动化生产是该领域目前急需解决的关键问题,针对上述问题,本发明提出一种高筋薄板的轧制成形工艺,可以通过轧制塑性变形,一次成型,在提高板材整体性能的同时可以高效、连续化生产,具有重要的理论价值和应用前景。
发明内容
本发明目的是提供一种安全、经济、高效的复杂高筋薄板的轧制成形工艺,可满足多类型、在线生产等技术要求;
为实现上述目的,具体发明过程如下:
一种复杂高筋薄板的轧制成形工艺,包括下输送辊、上定位辊,轧辊,辊套以及轧制成形方法。
所述下输送辊,其特征在于整体为圆柱体两侧可接传动装置,整体位置固定,起到传送工件作用;
所述上定位辊,其特征在于整体为圆柱体两侧可接传动装置,整体可上下平移,起到固定工件作用;
所述轧辊其特征在于轧辊可进行双向旋转,且上轧辊可以上下平移,并起到调节辊缝作用。
所述辊套其特征在于有制备所需筋体形状的凹槽,且辊套工作层变形抗力与变形温度远大于成型坯料,轧辊咬入坯料,将坯料轧制成所需的高筋薄板,起到制备不同类型加强筋作用。
轧制过程中,轧件会产生轧辊轴方向宽展,辊套的宽度要大于轧件轧后的宽度,以免材料包裹在辊套上,造成设备损坏和材料的损失。辊套的宽度应满足如下条件:
Figure 451291DEST_PATH_IMAGE002
其中B为辊套的宽度;
Figure 100002_DEST_PATH_IMAGE003
为轧件轧制时的宽展;
Figure 691779DEST_PATH_IMAGE004
为轧件原始厚度;
同时轧件轧制过程中轧件宽展
Figure 642417DEST_PATH_IMAGE003
的取值为:
Figure 524923DEST_PATH_IMAGE006
辊套半径为R取值如下:
R
Figure 100002_DEST_PATH_IMAGE007
35×
Figure 595516DEST_PATH_IMAGE008
其中
Figure 538064DEST_PATH_IMAGE003
为宽展;
Figure 975999DEST_PATH_IMAGE008
为轧件原始厚度;
Figure 100002_DEST_PATH_IMAGE009
为轧件压向量;
Figure 334299DEST_PATH_IMAGE010
为摩擦系数。
以“田”字加强筋为例,轧辊和辊套如图2所示;
轧制成型方法:轧辊咬入坯料,在摩擦力和轧制力作用下,将坯料轧制成所需的高筋薄板。且轧制速度应满足如下条件:
Figure 100002_DEST_PATH_IMAGE011
其中V为轧制速度;R为辊套半径;
Figure 806868DEST_PATH_IMAGE008
为轧件原始厚度;
Figure 920318DEST_PATH_IMAGE012
为所需板厚;
Figure 100002_DEST_PATH_IMAGE013
为所需筋高;
Figure 314390DEST_PATH_IMAGE014
为应变速率,取值如下:
Figure 100002_DEST_PATH_IMAGE015
其中
Figure 538698DEST_PATH_IMAGE016
为轧件轧制到所需板厚压下量,
Figure DEST_PATH_IMAGE017
Figure 318304DEST_PATH_IMAGE018
为轧件轧制到所需板筋压下量,
Figure DEST_PATH_IMAGE019
本发明有以下几点积极效果:
1.本发明工艺与现有生产方式相比有着绿色、高效、连续化、批量化等优势;
2.可以实现无损成形,成材率更高;
3.经本发明生产的加强筋板坯与同类型铸造相比,性能提高40%,可满足特殊工程需要;
4.本发明设备维护简洁,只需修磨轧辊表面便完成设备维护;
5.本发明对人力资源要求不高,节省人力资源;
附图说明
图1为本发明辊套示意图;1-接触面,2-“田”字凹槽。
图2为一种复杂高筋薄板的轧制成型方法;3-下输送辊,4-上定位辊,5-板坯,6-上轧辊,7-下轧辊,8-辊套。
图3为高筋薄板轧制工艺成型过程。
具体实施方式
以生产板厚h1=8mm,筋高h2=16mm板材为例:
生产参数:坯料厚度
Figure 71497DEST_PATH_IMAGE008
=30mm;坯料的宽度b=400mm;所需板厚h1=8mm;筋高h2=16mm;轧辊半径R=500mm;摩擦系数
Figure 484023DEST_PATH_IMAGE010
=0.35;
轧制速度45mm/s,首先将轧辊加工深度为d=8mm的所需凹槽,将坯料经过下输送辊输送至轧辊辊缝处,上定位辊压下,轧辊正转,咬入坯料,进行轧制过程,由于辊套轧制变形抗力与变形温度远高于坯料,所以在变形中,所有变形量均由坯料完成,轧辊和辊套变形微小可忽略不计,经过大压下量轧辊轧制后,坯料厚度变成所需板材厚度h1=8mm,并因轧辊作用,产生高度为h2=16mm的加强筋体;
规定坯料的宽度不可过宽,此高筋薄板轧制过程中会产生31mm的宽展,轧辊和辊套的宽度不可低于400mm+35mm=435mm。经过后续平整、切边、切头工序即可得到所需板材,可实现不间断大量生产高筋薄板。

Claims (2)

1.一种复杂高筋薄板的轧制成形工艺,其特征在于,包括:下输送辊、上定位辊、上轧辊、下轧辊、辊套,坯料经过下输送辊输送至轧辊辊缝,上定位辊压下,下轧辊和配有辊套的上轧辊对坯料进行压下轧制;所述辊套制备有筋体所需形状凹槽,且辊套变形抗力与变形温度远大于坯料,选择合适凹槽的辊套配对轧辊,控制轧制速度来生产高筋薄板;
轧制过程中,轧件会产生轧辊轴方向宽展,辊套的宽度要大于轧件轧后的宽度,以免材料包裹在辊套上,造成设备损坏和材料的损失,辊套的宽度应满足如下条件:
Figure 446355DEST_PATH_IMAGE002
其中B为辊套的宽度;
Figure DEST_PATH_IMAGE003
为轧件轧制时的宽展;
Figure 841564DEST_PATH_IMAGE004
为轧件原始宽度;
同时轧件轧制过程中宽展
Figure 655937DEST_PATH_IMAGE003
的取值为:
Figure 416082DEST_PATH_IMAGE006
其中
Figure DEST_PATH_IMAGE007
为轧件原始厚度;
Figure 683116DEST_PATH_IMAGE008
为轧件压向量;
Figure DEST_PATH_IMAGE009
为摩擦系数;R为轧辊半径,取值如下:
R
Figure 819699DEST_PATH_IMAGE010
35×
Figure 488578DEST_PATH_IMAGE007
轧辊咬入坯料,在摩擦力和轧制力作用下,将坯料轧制成所需的高筋薄板,且轧制速度应满足如下条件:
Figure DEST_PATH_IMAGE011
其中V为轧制速度;
Figure 481941DEST_PATH_IMAGE012
为所需板厚;
Figure DEST_PATH_IMAGE013
为应变速率,取值如下:
Figure 672489DEST_PATH_IMAGE014
其中
Figure DEST_PATH_IMAGE015
为轧件轧制到所需板厚压下量;
Figure 409501DEST_PATH_IMAGE016
为轧件轧制到所需板筋压下量
Figure 932886DEST_PATH_IMAGE018
Figure 300413DEST_PATH_IMAGE020
其中
Figure DEST_PATH_IMAGE021
为所需筋高。
2.根据权利要求1中所述轧制成形工艺,其特征在于,根据生产要求,更换不同辊套来生产不同规格的板材。
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FR2223102A1 (en) * 1973-04-02 1974-10-25 Necnet Jacques Le Method of forming profile in thin metal strip - involves using pair of rollers producing transverse deformations
CH626544A5 (en) * 1979-02-02 1981-11-30 Sulzer Ag Method and apparatus for the production of corrugated wall sheets for ventilation ducts
US5337591A (en) * 1992-07-02 1994-08-16 Keating Koupling, Inc. Machine and method of making duct coupling
US20020018908A1 (en) * 1999-11-19 2002-02-14 Smith Troy G. Structures having enhanced slip-resistant surfaces and associated methods
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KR20170065628A (ko) * 2014-10-09 2017-06-13 신닛테츠스미킨 카부시키카이샤 돌출 릿지부를 갖는 금속판의 제조 방법, 돌출 릿지부를 갖는 금속판, 및 구조 부품
CN107186063B (zh) * 2017-06-20 2019-02-12 重庆大学 基于辊压的整体壁板筋肋压型与弯曲一体化成形方法
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