Archive for the ‘Welding Brazing and Soldering’ Category

Welding of Nickel Alloys

Friday, March 24th, 2006

Nickel alloys can be joined reliably by all types of welding processes or methods, with the exception of forge welding and oxyacetylene welding. The wrought nickel alloys can be welded under conditions similar to those used to weld austenitic stainless steels. Cast nickel alloys, particularly those ...

Copper and Copper Alloy Casting Methods

Friday, March 24th, 2006

Many existing methods of producing copper base alloy castings may be broadly subdivided into six separate headings as follows. 1. Sand Casting and CO2 Process The conventional floor molding and bench molding methods of producing castings using either strickle or loose patterns is still very widely practiced in the copper-base alloy casting ...

Welding of Copper Alloys

Friday, March 24th, 2006

Copper and copper alloys offer a unique combination of material properties that makes them advantageous for many manufacturing environments. They are widely used because of their excellent electrical and thermal conductivities, outstanding resistance to corrosion, ease of fabrication, and good strength and fatigue resistance. Other useful characteristics include spark resistance, ...

Welding of Commercially Pure Titanium

Friday, March 24th, 2006

Although the welding techniques employed for commercially pure titanium are also applicable to many titanium alloys, extra attention to ensure adequate shielding is necessary because these materials are less tolerant of contamination. As fabricators are largely concerned with welding sheet, the information given deals mainly with this form of material, ...

Welding of Titanium Alloys

Friday, March 24th, 2006

Commercially pure titanium and most of titanium alloys can be welded by procedures and equipment used in welding austenitic stainless steel and aluminum. Because of the high reactivity of titanium and titanium alloys at temperatures above 550°C, additional precautions must be applied to shield the weldment from contact with air. ...

Welding of Aluminum Alloys

Friday, March 24th, 2006

Aluminum and its alloys can be joined by more methods than any other metal, but aluminum has several chemical and physical properties that need to be understood when using the various joining processes. The specific properties that affect welding are its oxide characteristics, its thermal, electrical, and nonmagnetic ...

Selection and Weldability of Non-Heat-Treatable Aluminum Alloys

Friday, March 24th, 2006

Non-heat-treatable aluminum alloys constitute a group of alloys that rely solely upon cold work and solid solution strengthening for their strength properties. They differ from heat-treatable alloys in that they are incapable of forming second-phase precipitates for improved strength. Therefore, non-heat-treatable alloys cannot achieve the high strengths characteristics of precipitation-hardened ...