公开(公告)号：US06485585B2

公开(公告)日：2002-11-26

申请号：US09792106

申请日：2001-02-26

Applicant: Paul Edward Krajewski

Inventor： Paul Edward Krajewski

IPC: C22F104

CPC classification number: C22F1/047 ,  C21D8/0273 ,  C21D2201/04 ,  C22F1/00 ,  C22F1/06 ,  C22F1/183

Abstract: Pre-straining and thermal recrystallization processes for maximizing formability in SPF sheet alloys of aluminum, magnesium, iron and titanium can be modified to form sheet products with roughened or textured surfaces for low-slip applications or coating adherence or decorative applications. By determination of suitable pre-strain levels and recrystallization/forming temperatures for s sheet metal stock, relatively large grained microstructures are formed in the sheet that yield useful surface texture during forming.

公开(公告)号：US5974847A

公开(公告)日：1999-11-02

申请号：US89634

申请日：1998-06-02

Applicant: Frederick Irvin Saunders ,  Paul Edward Krajewski ,  Edward Frank Ryntz ,  James Gregory Schroth

Inventor： Frederick Irvin Saunders ,  Paul Edward Krajewski ,  Edward Frank Ryntz ,  James Gregory Schroth

IPC: B21D26/055 ,  B21D26/02

CPC classification number: B21D26/055 ,  Y10T29/49805

Abstract: A method is disclosed for stretching sheet blanks, especially superplastic sheets, by differential gas pressure into conformity with a female die surface without encountering excessive thinning or tearing of the sheet. The warmed SPF sheet is draped over a preformed surface to draw more of the sheet material into the die cavity before the edges of the sheet are fixedly clamped whereby the additional formable material is used in forming the product, thereby reducing thinning and tears.

Abstract translation: 公开了一种用于通过差分气体压力将片材坯料，特别是超塑性片材拉伸成与母模表面一致的方法，而不会遇到片材的过度变薄或撕裂。 将预热的SPF片材覆盖在预成型的表面上，以便在片材的边缘被固定夹紧之前将更多的片材材料吸入模腔中，由此在形成产品时使用另外的可成形材料，从而减少变薄和撕裂。

公开(公告)号：US5924760A

公开(公告)日：1999-07-20

申请号：US757599

申请日：1996-11-29

Applicant: Paul Edward Krajewski ,  Ronald George Lanzi ,  James Gregory Schroth

Inventor： Paul Edward Krajewski ,  Ronald George Lanzi ,  James Gregory Schroth

IPC: B21D13/00 ,  B60J5/04 ,  B60J7/00

CPC classification number: B60J5/045 ,  B21D13/00

Abstract: An anti-intrusion barrier comprising a corrugated metal sheet and at least one mounting flange integral with the sheet. The flange comprises extensions of the corrugations which have been collapsed inwardly upon themselves so as to provide a plurality of plateaus each defined by a pair of pleats formed by collapsed walls of the corrugations.

Abstract translation: 一种抗侵入屏障，包括波纹状金属片和与该片一体的至少一个安装凸缘。 凸缘包括已经在其自身上向内折叠的波纹的延伸部分，以便提供多个平台，每个平台由由波纹的折叠壁形成的一对褶皱限定。