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Laser Welding Saves Bad Core Pins

Laser Welding Core PinsThis job came to us from a customer from Northern California. The customer was in great of need repairing some brand new core pins that were machined out of speck and would be scraped if we couldn’t save them.
It was a groove .010 wide on a tapper with a .008 radius at the bottom, it needed to be laser welded without any distortion to the part. 
This would represent a very difficult job for anyone in the laser welding industry – do to the length and diameter restrictions.
We ended up taking the job and were able to laser weld to fill the groove with out any voids in the product.
Laser Welding Core PinsThe customer was then able to grind the weld back to the existing diameter without any sink or distortion on all 6 parts required due to the consistency throughout our laser welding process.
We were able to service the customer with these requirements that allowed zero scrap and no need to remake – saving them a lot of time and money.

O.D. – I.D. Grinding

OD - ID Grinding, Pomona, Ca.O.D. – I.D. Grinding

Precision welding projects may sometimes include precision grinding work to meet the project specs.

Inside Diameter/Outside Diameter (ID/OD) universal grinders belong to the center type family of cylindrical grinding machines. The basic construction of a universal grinding machine is almost same as a plain grinding machine. However, some advanced features and auxiliary attachments make the first one suitable to execute more universal machining processes.

The principle difference between these two types of cylindrical grinding machines is this: Both the wheel head and work head can be swiveled in universal type grinders, where plain grinders don’t offer this feature.

Universal grinders are generally classified into two types regardless of their applications: Inside diameter (ID) and outside diameter (OD) universal grinders. The grinding that occurs on the external faces or outside diameters of an object is frequently called OD grinding. This is done by the periphery of the grinding wheel. On the other hand, ID grinding systems are used to grind the inside diameter of an object.

Universal grinders are best suited for tool room applications because of their very high versatility. These machines can execute face, internal, and surface grinding. This includes tapered surface grinding using auxiliary attachments.

Applications for Micro TIG Welding

Micro TIG (micro tungsten inert gas) welding , also called pulse arc welding, is an arc-welding process that uses a non-consumable tungsten electrode to produce an arc which creates the actual weld.

Micro TIG welding is a non-contact process, which, like laser welding, requires an external fixture to apply force to create proper part fit-up. It utilizes a welding power supply with a constant current and produces high quality welds with minimal heat affected zones by generating arcs between the workpiece and the tungsten electrode, and using the resultant heat to actually create the joint.

Micro TIG processes usually focus on welding very small parts of area. These are usually delicate parts in the automotive, medical, or electronics industry. 

There are many advantages to Micro TIG welding. For example, it’s a solder-free process and the resultant weld is highly durable when exposed to vibration and heat.

This type of welding is commonly used for Medical, Military, Space, and consumer products like Surgery equipment, Ocular products, high performance products and other markets.

The Technology Behind Laser Welding

Laser Welding Pomona, Ca.Great article on Science Daily about the technology behind laser welding, it’s use and applications. For anyone who uses or needs this technology for products, work, etc. this article gives great detail and insight into the process. This is an emerging technology and has many implications regarding uses and potential.

“On its surface, the work is deceptively simple: Shoot a high-power laser beam onto a piece of metal for a fraction of a second and see what happens. But researchers say the physics of laser welding is surprisingly complex. A better understanding of the interaction between laser and metal could give industry more control over laser welding, a technology that is becoming increasingly popular in manufacturing.

For the past three years, scientists at the National Institute of Standards and Technology (NIST) have been collecting data on the most fundamental aspects of laser welding. The scope of their study is narrow, but the measurements of this complicated process are more accurate and comprehensive than any data ever collected on the subject, the researchers say.”

Read the full article here: https://www.sciencedaily.com/releases/2019/05/190501171320.htm

*Photo Credit: Paul Williams/NIST

Okamoto ACC 12-24 DX Hydraulic Feed Wet Surface Grinder

This is a sample of the kind of equipment we have here at the B & D Welding Shop. We keep up to date on the latest and most precision equipment to best serve our customers all over Southern California.

Specs:

Precision Grinder

The ACC-12•24 is a next generation automatic type surface grinder that provides the reliability and simplicity of electronic control while still providing “hands-on” operation.

It incorporates the proven design and construction features that have made Okamoto automatic surface grinders the preferred choice for users worldwide.

 

  • Highly rigid construction with wide frame that eliminates table overhang.
  • Double Vee table slides.
  • User-friendly MDI Control set-up. Touch Pad Control for Cross and Vertical Rapid Feeds.
  • Teach Function for Crossfeed Position.
  • Micro Feeder standard.
  • High-accuracy flat and form grinding with programmable dressing and dress compensation.
  • AC driven vertical feed with minimum increment of 0.00005″.
  • Manual Pulse Generator also built into control.
  • All functions integrated into control.