Posted in 4130 Chrome-Moly, Auto Racing Custom Parts, Custom Motorcycle Parts, Metal Fabrication, Metal Welding Manufacturing, Prototype Parts, TIG Welding, Welding, YouTube, tagged 4130, 4130 chromoly, 4606, AISI, alloys, Bicycle Manufacturing, Chassis, Chro-Mo, Chrome-Moly, CHROMIUM MOLYBDENUM, Custom Car Parts, Custom Motorcycle Parts, custom parts, Custom Racing Parts, custom snowmobile parts, custom street rod parts, heliarc, Machined Parts, metal craftsman, Metal Fabrication, Metal Manufacturing, Metal Works Fab, Metal Works Fabrication, metalworks, MetalWorks Fabrication, Mooresville NC, NASCAR, North Carolina, Prototype Parts, prototype products, Scott LePage, steel tubing, TIG, TIG Welding, Welding, welding manufacturing, Welding Q&A, Welding Specialist, www.metalworksfab.com on October 3, 2009| Leave a Comment »
Metalworks Fabrication design NASCAR Sprint Cup front shock mount.
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Posted in 4130 Chrome-Moly, Auto Racing Custom Parts, Metal Fabrication, Metal Manufacturing, Metal Welding Manufacturing, Prototype Parts, TIG Welding on September 19, 2009| Leave a Comment »
Quarter Midget Race Car Project. Metalworks was contracted to build multiple Custom Designed Quarter Midget Race Cars from scratch. One of the many projects Metalworks has been associated with in the many areas of Motorsports over the years. If you have been following us you have seen that we have been involved in numerous NASCAR projects as well as Motorcycle Racing, Drag Racing, Snowcross & Off Road Racing.
As always, we would be more than happy to discuss your Metalworks project from the biggest of BIG to the smallest of small.
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Posted in 4606, Bicycle Manufacturing, Custom Car Parts, Custom Motorcycle Parts, Metal Fabrication, Metal Manufacturing, Prototype Parts, TIG Welding, Welding, tagged 4130, 4130 chromoly, AISI, alloys, Bicycle Manufacturing, Chassis, Chro-Mo, Chrome-Moly, CHROMIUM MOLYBDENUM, Custom Motorcycle Parts, custom parts, Custom Racing Parts, custom snowmobile parts, custom street rod parts, heliarc, metal craftsman, Metal Fabrication, Metal Works Fab, metalworks, prototype products, Scott LePage, steel tubing, TIG, Welding, welding manufacturing, Welding Q&A, www.metalworksfab.com on September 4, 2009| 1 Comment »
Q. Can I weld 4130 using the TIG process?
A. Yes, 4130 Chrome-Moly has been TIG welded in the aerospace and aircraft industries for years. As with all welding, proper procedures and techniques must be followed.
Q. Do I need to preheat ?
A. Thin wall tubing (< 0.120″ wall) applications do not typically require the normal 300ºF to 400ºF pre-heat to obtain acceptable results. However, tubing should be at room temperature (70ºF) or above before welding.
Q. What filler material do I use?
A. Although there are several good filler materials, ER80S-D2, is one y
ou should consider. This filler material is capable of producing welds that approximate the strength of 4130. ER-70S-2 is an acceptable alternative to ER80S-D2, as is ER70S-6, although the weld strength will be slightly lower.
Q. When I use ER70S-2 filler material, do I give up strength for elongation?
A. Yes. The filler material, when diluted with the parent material, will typically undermatch the 4130. However, with the proper joint design (such as cluster or gusset, for example), the cross-sectional area and linear inches of weld can compensate for the reduced weld deposit strength.
Q. Why is 4130 filler metal not recommended?
A. 4130 filler typically is used for applications where the weld will be heat treated. Due to its higher hardness and reduced elongation, it is not recommended for sporting applications such as experimental airplanes, race car frames, roll cages, etc.
Q. Can I weld 4130 using any other filler metals?
A. Some fabricators prefer to use austenitic stainless steel fillers to weld 4130 tubing. This is acceptable provided 310 or 312 stainless steel fillers are used. Other stainless steel fillers can cause cracking. Stainless filler material is typically more expensive.
Q. Do I need to heat treat (stress relieve) 4130 after welding?
A. Thin wall tubing normally does not require stress relief. For parts thicker than .120″, stress-relieving is recommended and 1,100ºF is the optimum temperature for tubing applications. An Oxy/Acetylene torch with neutral flame can be used. It should be oscillated to avoid hot spots.
Q. Do I have to pre-clean 4130 material?
A. Remove surface scale and oils with mild abrasives and acetone. Wipe to remove all oils and lubricants. All burrs should be removed with a hand scraper or de-burring tool. Better welding results with clean materials.
Q. Do I need to back-purge 4130 material?
A. Backpurging is not normally necessary, although some fabricators do. It will not hurt the weld and may improve the root pass of some welds.
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Q. Should I quench the metal after I finish welding?
A. ABSOLUTELY NOT! Rapid quenching of the metal will create problems such as cracking and lamellar tearing. Always allow the weld to slow cool.
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The Welding & Metal Fabrication Specialists 