Filter Content

John Henry's last challenge or a Rube Goldberg device?

September 10, 2003

By:

Picking the right press brake has never been an easy task and it continues to get harder all the time. New hydraulic systems offer unbelievable control and sophisticated hydraulic valving that were unimaginable just a few short years ago.

Continue Reading

Pumps for abrasive jet cutting

September 10, 2003

By:

This is the last of four articles intended to help a prospective buyer evaluate the wide range of abrasive jet machinery on the market. The first article covers the abrasive jet process itself in comparison with other cutting processes to help the prospective buyer understand the pros and cons of...

Continue Reading

Protecting surface-sensitive materials in coil processing - Three potential danger areas

August 28, 2003

By:

As manufacturers worldwide strive to reduce costs and streamline their production processes, the market for surface-sensitive materials continues to expand. Surface-sensitive materials include all prepainted steel products and nonferrous decorative materials, such as copper, brass, and stainless steel.

Continue Reading

Unique fireplace items can fire up your income

August 28, 2003

By:

Fireplace screens don't have to be boring. Fireplace tools don't have to be ordinary. Re-thinking the function of fireplace screens and tools can add a new dimension to these items and attract customers like moths to a flame.

Continue Reading

Safety pays

August 28, 2003

By:

Now more than ever, fabricators must believe that safety pays. It pays to make safety a high priority, to invest in safety training, and to provide a safe workplace. The pressure to reduce costs during this very competitive time is great, but it is imperative that owners and managers believe safety...

Continue Reading

Efficient use of compressed gases can increase productivity

August 28, 2003

By:

The metal fabrication industry has used compressed gases for more than one hundred years. Oxy-fuel cutting and welding have existed since the beginning of the 20th century. The more automatic welding processes, such as gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW), began as early as 1920.

Continue Reading

Inverter versus transformer power supplies for aluminum GTAW

August 28, 2003

By:

I'm looking for a new GTAW power supply for AC aluminum welding. I had intended to buy a conventional transformer unit, but several people have told me to buy an inverter-based power supply. Which one is better for my application?Inverter-based power supplies do have some advantages over...

Continue Reading

Carbon content, steel classifications, and alloy steels

August 28, 2003

By:

Steel classification is important in understanding what types are used in certain applications and which are used for others. For example, most commercial steels are classified into one of three groups: plain carbon, low-alloy, and high-alloy. Steel classification systems are set up and updated frequently for this type of information.

Continue Reading

Washington women weld at the 'Y'

August 28, 2003

By:

It's a drizzly, blustery Pacific Northwest morning in November with the gray light of dawn coming up behind the Cascade Mountain Range.Crew Leader Cheryl Boxx, clad in Carhartts®, squares her hard hat in place and begins checking scaffolds, rigging, welding equipment, and her teammates'...

Continue Reading

Die geometry for embossing and stretching

August 28, 2003

By:

Stretching or embossing, not to be confused with drawing, is the process in which the part's geometry is obtained by stretching the metal into a forming cavity.

Continue Reading

Roll out the shelving

August 28, 2003

By:

Just as office managers look for the most efficient way to store files, shop managers must look for efficient ways to store heavy, expensive dies. Many offices have file cabinets with an index system for locating files quickly. The shop equivalent for storing and retrieving dies may be air-powered rollout shelf units.

Continue Reading

Using binder force control, force modulation, to improve part quality, stamping efficiency

August 28, 2003

By:

Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM), The Ohio State University, Professor Taylan Altan, director.Binder, or blank holder, force control is an important variable in the stamping process. Constant blank holder...

Continue Reading

Measuring tube as it grows and shrinks

August 28, 2003

By:

We always have some confusion at our house concerning desserts. My wife claims that I like only two kinds of pie: hot and cold. Well, she is mostly right. My favorite is cherry, and I love it served either hot or cold. Here's our family recipe—you be the judge. Grandma's Cherry Pie Ingredients:...

Continue Reading

Designing an off-road sport truck

August 28, 2003

By:

The main component in any off-road sport vehicle is the frame. Frames for mass-produced vehicles usually are stamped and welded. These are suitable for most drivers' needs, but for intense off-road driving and competitions, a sturdier frame is necessary.

Continue Reading

Minimizing wall thickness variation in seamless tubing

August 28, 2003

By:

All mechanical steel tubing has some amount of wall thickness variation. Wall variation in welded tubing results from the strip manufacturing and tube welding processes. Seamless tube, which is created from a hot billet of solid steel, has wall variation that results from tooling wear, bearing and shaft variation, and normal hot-process variation. The wall thickness in seamless tubing varies in the cross section and along the tube's length.

Continue Reading