公开(公告)号：US4972047A

公开(公告)日：1990-11-20

申请号：US256085

申请日：1988-10-04

Applicant: Mark W. Puddle ,  Nigel C. Davies ,  Peter M. Bullivant-Clark

Inventor： Mark W. Puddle ,  Nigel C. Davies ,  Peter M. Bullivant-Clark

IPC: B23K11/30 ,  B23K11/18 ,  B23K35/02

CPC classification number: B23K35/0205 ,  B23K11/18

Abstract: Electrodes used for spot welding of aluminium workpieces are improved by a combination of steps:(a) A roughened surface is formed on the electrode tip, preferably to an average roughness depth of 12 to 30 microns.(b) also an artificial protective coating, e.g. a chromate-based coating or an anodic oxide film, is applied to the workpieces.(c) Optionally the nugget diameter in the initial welding set-up is arranged to be not more than 15% greater than the minimum acceptable.Features (a) and (b) act synergistically to increase the service life of the electrodes, typically to more than 2000 welds.

Abstract translation: 用于铝工件点焊的电极通过以下步骤的组合来改进：（a）在电极尖端上形成粗糙表面，优选平均粗糙度深度为12至30微米。 （b）还有人造保护涂层，例如。 将铬酸盐基涂层或阳极氧化膜施加到工件上。 （c）可选地，初始焊接装置中的熔核直径设置为不超过最小可接受的15％。 特征（a）和（b）协同地起作用以增加电极的使用寿命，通常超过2000个焊缝。

公开(公告)号：US4975334A

公开(公告)日：1990-12-04

申请号：US469512

申请日：1990-03-12

Applicant: Peter M. Bullivant-Clark

Inventor： Peter M. Bullivant-Clark

IPC: B21D47/00 ,  B32B3/12 ,  B32B3/24 ,  E04C2/34

CPC classification number: B32B3/12 ,  B21D47/00 ,  E04C2/34 ,  Y10T156/1016 ,  Y10T156/1026 ,  Y10T29/496 ,  Y10T29/49906 ,  Y10T428/1234 ,  Y10T428/12368 ,  Y10T428/1241

Abstract: A continuous process for making a core for a composite panel comprising cutting spaced apart tongues in columns from a metallic sheet, the tongues being foldable about base lines in the columns each base line being separated from the next tongue in the column by a web; folding the sheet to form a castellated structure having continuous side walls constituted by the spaces between adjacent columns of tongues with the webs of adjoining rows respectively lying in spaced apart parallel planes and oppositely folding the tongues of adjoining columns to lie alongside adjacent side walls with their extremities remote from their base lines extending in an appropriate one of the planes. The invention also includes a composite panel comprising the core covered on each side with sheet material as well as a process for making such a panel.

Abstract translation: PCT No.PCT / GB88 / 00589 Sec。 371 1990年3月12日 102（e）1990年3月12日PCT PCT。 出版物WO89 / 00897 日本1989年2月9日。用于制造复合面板的芯的连续方法，包括从金属片切割柱中的间隔开的舌片，所述舌片可围绕所述列中的基线折叠，每根基线与下一个舌头分离 网页上的列; 折叠片材以形成具有由相邻的舌片之间的间隔构成的具有连续侧壁的连续侧壁，相邻排的腹板分别位于间隔开的平行平面中，并且相对地折叠相邻列的舌片以与相邻的侧壁相邻并且与它们相邻 远离其基线的四肢在适当的一个平面中延伸。 本发明还包括复合面板，其包括每侧覆盖有片材的芯以及用于制造这种面板的工艺。