CN201537814U - Tailored welded blank roll forming device - Google Patents
Tailored welded blank roll forming device Download PDFInfo
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- CN201537814U CN201537814U CN2009202162560U CN200920216256U CN201537814U CN 201537814 U CN201537814 U CN 201537814U CN 2009202162560 U CN2009202162560 U CN 2009202162560U CN 200920216256 U CN200920216256 U CN 200920216256U CN 201537814 U CN201537814 U CN 201537814U
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- 238000003466 welding Methods 0.000 claims abstract description 91
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000013000 roll bending Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 2
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
- B21D35/006—Blanks having varying thickness, e.g. tailored blanks
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Abstract
本实用新型涉及一种拼焊板辊弯成型装置，属于辊弯成型的技术及设备领域，用于生产任意断面的拼焊板型材。该装置的组成包括焊接前上下定位轧辊，焊接前左右定位轧辊，焊接装置，焊接后左右定位轧辊，焊接后上下定位轧辊及成型轧辊组，在成型轧辊组前设有焊接装置。通过上述装置，可将不同厚度、性能、材质和表面涂层的两块或两块以上板材，先通过焊接前上下定位轧辊和左右定位轧辊，然后通过焊接装置焊在一起，再通过焊接后左右定位轧辊和上下定位轧辊，最后经过成型轧辊组进行辊弯成型。相较于现有冲压技术，本实用新型可连续、高效、高质量地生产任意断面的拼焊板型材。
The utility model relates to a roll-bending device for tailor-welded plates, which belongs to the field of roll-bending technology and equipment, and is used to produce tailor-welded plate profiles with arbitrary cross-sections. The device comprises upper and lower positioning rollers before welding, left and right positioning rollers before welding, a welding device, left and right positioning rollers after welding, upper and lower positioning rollers after welding, and a forming roller group, and a welding device is provided in front of the forming roller group. Through the above-mentioned device, two or more plates with different thicknesses, properties, materials, and surface coatings can be welded together by first passing through upper and lower positioning rollers and left and right positioning rollers before welding, and then through a welding device, and then through left and right positioning rollers and upper and lower positioning rollers after welding, and finally through a forming roller group for roll bending. Compared with the existing stamping technology, the utility model can continuously, efficiently, and with high quality produce tailor-welded plate profiles with arbitrary cross-sections.
Description
技术领域technical field
本实用新型属于辊弯成型的技术及设备领域，具体涉及一种拼焊板辊弯成型装置，用于生产任意断面的拼焊板型材。The utility model belongs to the field of roll bending forming technology and equipment, in particular to a tailor welded blank roll forming device, which is used for producing tailor welded blank profiles with arbitrary sections.
背景技术Background technique
近年来，出于对环保、能源、降低制造成本和安全问题的考虑，汽车轻量化成为国内外汽车工业发展的主要目标。在实现汽车轻量化的过程中，拼焊板在汽车制造领域得到广泛应用。迄今为止，拼焊板加工一般采用冲压成型。In recent years, due to the consideration of environmental protection, energy, manufacturing cost reduction and safety issues, automobile lightweight has become the main goal of the development of domestic and foreign automobile industries. In the process of realizing the lightweight of automobiles, tailor-welded blanks are widely used in the field of automobile manufacturing. So far, the processing of tailor-welded blanks generally adopts stamping forming.
但是，拼焊板在冲压成型时存在破裂、起皱、焊缝移动和回弹等问题，影响加工质量。而且，冲压模具的制造成本高、制造周期长，可生产的产品规格品种有限，这些问题对于企业在开发新产品，争夺市场时都是一个大障碍。此外，拼焊板冲压成型还存在一大缺点：冲压生产过程存在冲头抬起的离线时间，生产不够连续、高效。However, there are problems such as cracking, wrinkling, weld seam movement and springback in the stamping process of tailor-welded blanks, which affect the processing quality. Moreover, the manufacturing cost of stamping dies is high, the manufacturing cycle is long, and the product specifications and varieties that can be produced are limited. These problems are a big obstacle for enterprises to develop new products and compete for the market. In addition, there is still a major disadvantage in the stamping and forming of tailor-welded blanks: there is an offline time when the punch is lifted during the stamping production process, and the production is not continuous and efficient.
专利号为ZL02257820.X，名称为“激光拼焊板冲压成形过程中的焊缝移动控制装置”的中国实用新型专利中，公开了一种控制激光拼焊板成形过程中焊缝移动量的装置，主要用于应用激光拼焊板来冲压成形车身覆盖件的场合。其采用三种结构组合来控制激光拼焊板冲压成形过程中的焊缝移动：1)组合式的压边圈和凸模的成形部分带有台阶面，使激光拼焊板薄侧板料有足够的压边力而使焊缝移动量减少；2)利用氮气缸所产生的夹紧力，在激光拼焊板冲压成形过程中将焊缝夹紧以减少焊缝移动量；3)在模具压料面上合理布置拉延筋，控制激光拼焊板厚薄侧板料的变形流动情况。应用该装置可以很好地控制成形过程中焊缝移动以及由此造成的板料破裂和起皱现象。但是，该技术方案无法解决拼焊板冲压成型中的板材回弹和生产不够连续等问题。The patent number is ZL02257820.X, and the Chinese utility model patent titled "Weld seam movement control device in the process of laser tailor welded blank stamping forming" discloses a device for controlling the amount of weld seam movement in the process of laser tailor welded blank forming , which is mainly used in the application of laser tailor welded blanks to stamp and form body panels. It adopts three structural combinations to control the movement of the weld seam during the stamping process of the laser tailor welded blank: 1) The combined blank holder and the forming part of the punch have a stepped surface, so that the thin side sheet of the laser welded blank has a Sufficient blank holder force to reduce the movement of the weld; 2) Use the clamping force generated by the nitrogen cylinder to clamp the weld during the stamping process of the laser welded blank to reduce the movement of the weld; 3) In the mold The drawbeads are reasonably arranged on the binder surface to control the deformation and flow of the thick and thin side sheets of the tailor-welded blank. The application of this device can well control the movement of the weld seam during the forming process and the resulting cracking and wrinkling of the sheet metal. However, this technical solution cannot solve the problems of plate springback and insufficient continuous production in stamping forming of tailor-welded blanks.
实用新型内容Utility model content
针对现有拼焊板冲压加工技术的不足，本实用新型提出了一种能够连续、高效、高质量地生产任意断面的拼焊板型材的拼焊板辊弯成型装置。Aiming at the deficiencies of the existing tailor welded blank stamping processing technology, the utility model proposes a tailor welded blank roll bending device capable of continuously, efficiently and high quality producing tailor welded blank profiles of any cross section.
为了实现上述目的，本实用新型采用如下技术方案：In order to achieve the above object, the utility model adopts the following technical solutions:
本实用新型的一种拼焊板辊弯成型装置由焊接前上下定位轧辊(4)、(5)，焊接前左右定位轧辊(6)、(7)，焊接装置(8)、(9)，焊接后左右定位轧辊(10)、(11)，焊接后上下定位轧辊(12)、(13)及成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)构成，其特征在于，在成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)前设有焊接装置(8)、(9)。将不同厚度、性能、材质和表面涂层的两块或两块以上板材(1)、(2)、(3)，先通过焊接前上下定位轧辊(4)、(5)和焊接前左右定位轧辊(6)、(7)，然后通过焊接装置(8)、(9)焊在一起，再通过焊接后左右定位轧辊(10)、(11)和焊接后上下定位轧辊(12)、(13)，最后经过成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)进行辊弯成型，可连续、高效、高质量地生产任意断面的拼焊板型材。A tailor welded blank roll bending forming device of the utility model consists of upper and lower positioning rolls (4), (5) before welding, left and right positioning rolls (6), (7) before welding, welding devices (8), (9), Left and right positioning rolls (10), (11) after welding, up and down positioning rolls (12), (13) and forming roll groups (15), (16), (17), (18), (19), ( 20), (21), (22) constitute, it is characterized in that, in forming roll group (15), (16), (17), (18), (19), (20), (21), (22 ) before being provided with welding device (8), (9). Two or more plates (1), (2), (3) with different thicknesses, properties, materials and surface coatings are firstly positioned by the up and down positioning rolls (4), (5) before welding and left and right positioning before welding. Rolls (6), (7) are welded together by welding device (8), (9) then, then by welding rear left and right positioning rolls (10), (11) and welding rear up and down positioning rolls (12), (13 ), and finally through the forming roll group (15), (16), (17), (18), (19), (20), (21), (22) for roll forming, which can be continuous, efficient and high-quality It can efficiently produce tailor-welded blank profiles with arbitrary cross-sections.
上述方案中，所述拼焊板辊弯成型装置的焊接装置(8)、(9)为激光焊、滚压电阻焊、氩弧焊、感应焊接装置或者等离子焊接装置中的一种。In the above solution, the welding devices (8) and (9) of the tailor welded blank roll forming device are one of laser welding, rolling resistance welding, argon arc welding, induction welding or plasma welding.
上述方案中，所述拼焊板辊弯成型装置的焊接装置(8)、(9)可在横向布置多个，从而可以实现两块以上板材的焊接。In the above solution, multiple welding devices (8) and (9) of the tailor welded blank roll forming device can be arranged laterally, so as to realize the welding of more than two plates.
上述方案中，在焊接装置(8)、(9)前后设有焊接前上下定位轧辊(4)、(5)和焊接后上下定位轧辊(12)、(13)，可保证板材保持水平，有效抑制板材上下振动，提高了后续加工精度。In the above scheme, the upper and lower positioning rollers (4), (5) before welding and the upper and lower positioning rollers (12), (13) after welding are arranged before and after the welding device (8), (9), which can ensure that the plate remains horizontal and effectively The up and down vibration of the plate is suppressed, and the subsequent processing accuracy is improved.
上述方案中，在焊接装置(8)、(9)前后设有焊接前左右定位轧辊(6)、(7)和焊接后左右定位轧辊(10)、(11)，可有效抑制板材左右移动，从而提高了后续加工精度。In the above scheme, the left and right positioning rollers (6), (7) before welding and the left and right positioning rollers (10), (11) after welding are arranged before and after the welding devices (8), (9), which can effectively suppress the left and right movement of the plate, Thereby improving the follow-up processing precision.
上述方案中，所述拼焊板辊弯成型装置的成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)，可分为若干个道次，从而逐渐将板材辊弯成型为所需的形状。In the above scheme, the forming roll groups (15), (16), (17), (18), (19), (20), (21), (22) of the tailor welded blank roll forming device can be Divided into several passes, the sheet is gradually roll-formed into the desired shape.
相较于拼焊板冲压加工技术，本实用新型具有如下优点：Compared with the stamping processing technology of tailor welded blanks, the utility model has the following advantages:
1、相较于拼焊板的冲压生产工艺，本实用新型可以实现拼焊板的焊接和辊弯成型在线连续生产，生产效率更高。1. Compared with the stamping production process of tailor welded blanks, the utility model can realize the online continuous production of welding and roll forming of tailor welded blanks, and the production efficiency is higher.
2、拼焊板冲压成型时存在焊缝移动和回弹等问题，而本实用新型中采用了上下和左右方向的夹持定位轧辊，可以大大改善这些问题，提高加工质量。2. There are problems such as weld seam movement and springback when stamping and forming tailor-welded blanks. However, the utility model adopts clamping and positioning rollers in the up and down and left and right directions, which can greatly improve these problems and improve the processing quality.
3、本实用新型采用辊弯成型技术，可通过合理设计型材的几何断面，提高承载能力，减轻结构重量；与冲压和折弯工艺相比，大批量的生产成本更低。3. The utility model adopts the roll forming technology, which can increase the bearing capacity and reduce the structural weight by rationally designing the geometric section of the profile; compared with the stamping and bending process, the mass production cost is lower.
4、相对于现有技术，可生产很复杂的断面形状，生产设备简单、重量轻、占地面积小、相对投资少；组织生产灵活，材料的长度可以根据需要灵活调整；产品表面光滑，尺寸精度高，机械性能好；相对其他加工方法更加省料，高效经济；可加工产品的材质多样化，可适应市场多方面的需求。4. Compared with the existing technology, it can produce very complex cross-sectional shapes, the production equipment is simple, light in weight, small in floor space, and relatively low in investment; the organization of production is flexible, and the length of the material can be flexibly adjusted according to needs; the product surface is smooth, and the size High precision and good mechanical properties; compared with other processing methods, it is more material-saving, efficient and economical; the materials of the processed products are diversified, which can meet the various needs of the market.
附图说明Description of drawings
图1是本实用新型的装置结构示意图；Fig. 1 is the device structural representation of the present utility model;
图2A是本实用新型的成型实例横截面图；Fig. 2A is a cross-sectional view of a molding example of the present utility model;
图2B是本实用新型的成型实例立体示意图。Fig. 2B is a three-dimensional schematic diagram of a molding example of the present invention.
附图中标记为：板材1、2、3，焊接前上下定位轧辊4、5，焊接前左右定位轧辊6、7，焊接装置8、9，焊接后左右定位轧辊10、11，焊接后上下定位轧辊12、13，焊接完成后的板材14，成型轧辊组15、16、17、18、19、20、21、22，辊弯成型后的板材23。Marked in the attached drawings are:
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型作进一步的详细描述：Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
如图1所示，本实用新型的装置由焊接前上下定位轧辊(4)、(5)，焊接前左右定位轧辊(6)、(7)，焊接装置(8)、(9)，焊接后左右定位轧辊(10)、(11)，焊接后上下定位轧辊(12)、(13)及成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)构成，在成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)前设有焊接装置(8)、(9)。焊接装置(8)、(9)为激光焊、滚压电阻焊、氩弧焊、感应焊接装置或者等离子焊接装置中的一种，可在横向布置多个，从而可以实现两块以上板材的焊接。在焊接装置(8)、(9)前后设有焊接前上下定位轧辊(4)、(5)和焊接后上下定位轧辊(12)、(13)，可保证板材保持水平，有效抑制板材上下振动，提高了后续加工精度。在焊接装置(8)、(9)前后设有焊接前左右定位轧辊(6)、(7)和焊接后左右定位轧辊(10)、(11)，可有效抑制板材左右移动，从而提高了后续加工精度。成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)，可分为若干个道次，从而逐渐将板材辊弯成型为所需的形状。As shown in Figure 1, the device of the present utility model is by up and down positioning roll (4), (5) before welding, left and right positioning roll (6), (7) before welding, welding device (8), (9), after welding Left and right positioning rolls (10), (11), up and down positioning rolls (12), (13) and forming roll groups (15), (16), (17), (18), (19), (20) after welding , (21), (22) constitute, before forming roll group (15), (16), (17), (18), (19), (20), (21), (22) be provided with welding device (8), (9). Welding devices (8), (9) are one of laser welding, rolling resistance welding, argon arc welding, induction welding or plasma welding, and multiple devices can be arranged in the horizontal direction, so as to realize the welding of more than two plates . Up and down positioning rollers (4), (5) before welding and up and down positioning rollers (12), (13) after welding are installed before and after welding devices (8), (9), which can ensure the level of the plate and effectively suppress the up and down vibration of the plate , to improve the follow-up processing accuracy. The left and right positioning rollers (6), (7) before welding and the left and right positioning rollers (10), (11) after welding are arranged before and after the welding device (8), (9), which can effectively restrain the left and right movement of the plate, thereby improving the follow-up Precision. The forming roll groups (15), (16), (17), (18), (19), (20), (21), (22) can be divided into several passes, so that the plate is gradually rolled into shape for the desired shape.
实施例：Example:
板材(1)为高强度不锈钢ZG10Cr13，厚度为0.8mm，初始尺寸为长1100mm，宽40mm；板材(2)为Q235，厚度为2mm，初始尺寸为长1100mm，宽60mm；板材(3)为高强度不锈钢ZG10Cr13，厚度为0.8mm，初始尺寸为长1100mm，宽40mm，成型为立边与腹板成90度角的U形截面型材，如图2A、图2B所示。The plate (1) is high-strength stainless steel ZG10Cr13 with a thickness of 0.8mm, and the initial size is 1100mm long and 40mm wide; the plate (2) is Q235, with a thickness of 2mm, and the initial size is 1100mm long and 60mm wide; the plate (3) is high High-strength stainless steel ZG10Cr13, with a thickness of 0.8mm, an initial size of 1100mm in length and 40mm in width, formed into a U-shaped cross-sectional profile with a 90-degree angle between the vertical side and the web, as shown in Figure 2A and Figure 2B.
在拼焊板辊弯成型装置中，焊接装置采用钕:钇铝石榴石激光器，钕:钇铝石榴石激光的波长为1064nm，横向布置两个焊接装置(8)、(9)。将焊接前上下定位轧辊(4)、(5)和焊接后上下定位轧辊(12)、(13)的辊间隙调整成中间部分2mm，两边部分0.8mm；将焊接前左右定位轧辊(6)、(7)和焊接后左右定位轧辊(10)、(11)的辊间距调整为140mm。将成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)分为三个成型道次，第一道次(15)、(16)，第二道次(17)、(18)，第三道次(19)、(20)、(21)、(22)，将各道次辊间隙调整成中间部分2mm，两边部分0.8mm，焊接完成后的板材(14)通过三个道次，依次成型为立边与腹板成30度角、60度角、90度角的的U形截面型材，如图2A、图2B所示。In the tailor welded blank roll forming device, the welding device uses a neodymium: yttrium aluminum garnet laser, the wavelength of the neodymium: yttrium aluminum garnet laser is 1064nm, and two welding devices (8) and (9) are arranged laterally. Adjust the roller gap between the upper and lower positioning rollers (4), (5) before welding and the upper and lower positioning rollers (12), (13) after welding to 2 mm in the middle part and 0.8 mm in both sides; before welding, the left and right positioning rollers (6), (7) and after welding, the roll spacing adjustment of left and right positioning rolls (10), (11) is 140mm. The forming roll group (15), (16), (17), (18), (19), (20), (21), (22) is divided into three forming passes, the first pass (15) , (16), the second pass (17), (18), the third pass (19), (20), (21), (22), the gap between the rollers of each pass is adjusted to 2mm in the middle, and the two sides part 0.8mm, the plate (14) after welding is passed through three passes, and is successively formed into a U-shaped cross-sectional profile with a vertical edge and a web at an angle of 30 degrees, 60 degrees, and 90 degrees, as shown in Figure 2A and Figure 2. 2B.
具体加工过程为：板材(1)、(2)、(3)首先通过焊接前上下定位轧辊(4)、(5)和焊接前左右定位轧辊(6)、(7)，然后通过焊接装置(8)、(9)焊接在一起，再通过焊接后左右定位轧辊(10)、(11)和焊接后上下定位轧辊(12)、(13)，焊接完成后的板材(14)依次经过三个道次的成型轧辊组(15)、(16)、(17)、(18)、(19)、(20)、(21)、(22)进行辊弯成型，经过第一道次(15)、(16)，成型为立边与腹板成30度角的U形截面型材，经过第二道次(17)、(18)，成型为立边与腹板成60度角的U形截面型材，经过第三道次(19)、(20)、(21)、(22)，最终成型为立边与腹板成90度角的U形截面型材，如图2A、图2B所示。The specific process is as follows: plates (1), (2), (3) first pass through the upper and lower positioning rolls (4), (5) before welding and the left and right positioning rolls (6), (7) before welding, and then pass through the welding device ( 8), (9) are welded together, and then through the left and right positioning rolls (10), (11) after welding and the up and down positioning rolls (12), (13) after welding, the plate (14) after welding is passed through three successively. The forming roll group (15), (16), (17), (18), (19), (20), (21), (22) of the pass carries out roll bending forming, and passes through the first pass (15) , (16), formed into a U-shaped cross-section profile with a 30-degree angle between the vertical edge and the web, after the second pass (17), (18), formed into a U-shaped cross-section with a 60-degree angle between the vertical edge and the web The profile, after the third pass (19), (20), (21), (22), is finally formed into a U-shaped section profile with a 90-degree angle between the vertical side and the web, as shown in Figure 2A and Figure 2B.
以上所述，仅为本实用新型较佳的具体实施方式，但本实用新型的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本实用新型揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本实用新型的保护范围之内。因此，本实用新型的保护范围应该以权利要求书的保护范围为准。The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.
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| CN101983788A (en) * | 2010-09-06 | 2011-03-09 | 北方工业大学 | Roll angle adjustable multi-roll flexible roll bending forming calibrating device |
| CN102179432A (en) * | 2011-03-05 | 2011-09-14 | 烟台新科钢结构有限公司 | U-shaped groove roll bending forming machine |
| CN103702778A (en) * | 2011-07-11 | 2014-04-02 | 武钢集团激光技术公司 | Method and device for producing tailored sheet-metal strips |
| CN104589060A (en) * | 2015-01-30 | 2015-05-06 | 安阳利浦筒仓工程有限公司 | Welding method and device for large-sized metal sheets |
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| CN101983788A (en) * | 2010-09-06 | 2011-03-09 | 北方工业大学 | Roll angle adjustable multi-roll flexible roll bending forming calibrating device |
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| WO2016146107A1 (en) * | 2015-03-13 | 2016-09-22 | Benteler Automobiltechnik Gmbh | Method for producing a shaped sheet metal part having wall thicknesses differing from each other by region, and axle subframe |
| US10226809B2 (en) | 2015-03-13 | 2019-03-12 | Benteler Automobiltechnik Gmbh | Method for producing a shaped sheet metal part having wall thicknesses differing from each other by region, and axle subframe |
| CN107257762B (en) * | 2015-03-13 | 2019-06-07 | 本特勒尔汽车技术有限公司 | For manufacturing the method and vehicle bridge subframe of the sheet metal forming part in the region with multiple wall thickness different from each other |
| CN108698159A (en) * | 2016-03-18 | 2018-10-23 | 爱励轧制产品德国有限责任公司 | The method for manufacturing the continuously casting aluminium alloy strips of variable-width |
| CN107186493A (en) * | 2017-07-24 | 2017-09-22 | 西莱特电梯（中国）有限公司 | Elevator door pocket production line |
| CN108723775A (en) * | 2018-05-30 | 2018-11-02 | 燕山大学 | A kind of experimental provision of high-frequency resistance welding |
| CN109261760A (en) * | 2018-10-17 | 2019-01-25 | 广州成亿电器有限公司 | Shaped rolling device for producing multi-media air curtain casing |
| CN109261760B (en) * | 2018-10-17 | 2020-01-24 | 广州成亿电器有限公司 | Moulding rolling press device is used in production of multi-media air curtain shell |
| CN111215793A (en) * | 2018-11-26 | 2020-06-02 | 晟通科技集团有限公司 | Roll welding assembly |
| CN111299827A (en) * | 2020-04-20 | 2020-06-19 | 昆山业展电子有限公司 | A laser welding equipment for coil resistance alloy welding |
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