Method for forming a titanium lined electrochemical cell

• US 4,765,530 A
• Filed: 02/12/1987
• Issued: 08/23/1988
• Est. Priority Date: 12/17/1984
• Status: Expired due to Fees

• Current Assignee: The Dow Chemical Company (Dow, Inc.)
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: Beaver, Richard N., Dang, Hiep D.
• Primary Examiner(s): Ramsey, Kenneth J.
• Application Number:
  US07/013,852
• Time in Patent Office: 558 Days
• Field of Search: 228/107, 228/175, 228/189, 228/184, 228/263.16, 228/263.21, 228/185
• US Class Current: 228/175
• CPC Class Codes: B23K 11/20 of different metals
• CPC Class Codes: B23K 35/005 at least one of the workpieces being of a refractory metal

Abstract

The invention is a method comprising:

welding a titanium sheet having a thickness of less than about 2 millimeters to a ferrous material through a weldably compatible intermediate material and a titanium intermediate.

Claims

1. A method for welding a thin titanium sheet to a ferrous substrate comprising sequentially performing the following steps:

(a) positioning a substantially homogenous vanadium intermediate adjacent to one surface of a ferrous substrate;

(b) then welding a substantially homogenous titanium intermediate to the vanadium, intermediate, and welding said vanadium intermediate to said ferrous substrate;

(c) then welding a titanium sheet having a thickness of less than about 2 millimeters to the titanium intermediate.

2. The method of claim 1 wherein the titanium intermediate is less than about 2 millimeters thick.

3. The method of claim 1 wherein the vanadium is less than about 0.5 millimeter thick.

4. The method of claim 1 wherein the ferrous material is selected from the group consisting of iron, cast iron, ductile iron, steel, and stainless steel.

5. A method for welding a thin titanium sheet to a ferrous substrate comprising sequentially performing the following steps:

(a) positioning a plurality of spaced-apart substantially homogenous vanadium intermediates adjacent to one surface of a ferrous substrate;

(b) then welding a homogenous titanium intermediate to each of the vanadium intermediates, and welding each said vanadium intermediate to said ferrous substrate;

(c) then welding a titanium sheet having a thickness of less than about 2 millimeters to the titanium intermediates.