Blogs

Welding Guide Subscription Form
Welding Guide

Get your FREE guide on what every welding engineer must know

Subscribe to get our latest content by email.

We won't send you spam. Unsubscribe at any time.
Search
Categories
The Real Purpose of a Welding Procedure Specification
Excessive Contact Tip Consumption: Causes and Remedies
Hot Cracking of 304 and 304L Stainless Welds
Tags
3 Effective Ways to Reduce Welding Rework

Rework in welding is a massive productivity killer—tripling labor, wasting material, and slowing down production. While there are many causes, three simple fixes can drastically reduce rework: stop overwelding, use properly qualified welding procedures, and maintain your equipment. In this post, we dive into how these small changes yield big results—lowering costs, improving quality, and increasing efficiency across the shop. If you're tired of grinding out the same welds twice, this is the post for you.

6 Challenges When Increasing Deposition Rates

Want to boost welding productivity? Increasing your deposition rate is one of the most effective ways—but only if done right. This post explains the difference between melt-off and deposition rate, how higher deposition leads to faster travel speeds (and real time savings), and the common mistakes that sabotage these gains. Learn how to avoid costly errors, why simply turning up the amps isn’t enough, and how training and proper welding procedures can unlock major efficiency improvements in your shop.

The Most Dangerous Weld Defect

While cracks are often considered the "worst" weld defect, the most dangerous ones are those that go undetected and are put into service. Many common discontinuities like lack of fusion, internal porosity, or even small surface cracks can be missed if quality control standards are inadequate or if inspections are timed improperly. For example, hydrogen-induced cracking can appear up to 48 hours after welding, and incorrect shielding gas for stainless steel, though visually appealing, can lead to costly premature corrosion or sensitization in service. Effective quality control, including qualified procedures, trained welders, and appropriate inspection timing and methods, is essential to prevent these hidden, catastrophic failures.

Prequalified Welding Procedure and Qualified Welding Procedure
Understanding the Difference between Qualified and Prequalified Welding Procedures

One of the most common questions in welding is whether qualified or prequalified welding procedures are better. Both serve the same purpose — ensuring consistent, high-quality welds — but they achieve it in different ways. Qualified procedures are proven through destructive and nondestructive testing, while prequalified procedures skip testing if strict code requirements are followed. Prequalified procedures save time and money upfront, but qualified procedures can sometimes reduce weld volume and cut long-term fabrication costs. In this post, we explain both approaches, the requirements for each, and when to use one over the other to get the best results for your shop.

The Challenges of Welding in Cold Temperatures
Who is responsible for determining weld size?

In many fabrication shops, welders are often left to determine weld sizes due to a lack of clear specifications from design engineers or customers. This common practice frequently leads to overwelding, where fillet welds are significantly larger than necessary, wasting material, gas, and labor. Beyond the increased cost, overwelding also introduces quality issues like distortion and slag inclusions, paradoxically causing more failures than undersized welds. While structural welding codes provide minimum weld sizes to ensure adequate heat input, these often appear "too small" to welders, leading them to apply excessive weldment.

3 Mistakes that lead to distortion in welding
Pick Your Prequalified Welding Procedures Carefully
Prequalified Welding Procedure and Qualified Welding Procedure
3 Key Factors Affecting the Quality and Cost of Welds

Quality and cost are directly connected, even though many fabricators treat them as separate issues. Poor weld quality may look inexpensive up front, but it often leads to expensive warranty work, rework, and lost customers. By establishing clear quality standards, implementing and enforcing welding procedures, and investing in welder training, shops can dramatically improve both quality and productivity. These steps are not just about compliance — they are proven ways to lower costs while boosting consistency and customer satisfaction. In short, improving welding quality does not have to mean higher costs; done correctly, it saves money and strengthens competitiveness.

Basics of Pressure Vessel Design

Designing pressure vessels can seem complex due to various loading conditions and head types, but fundamental formulas simplify the process. This post breaks down the core principles, highlighting the importance of understanding applicable codes, design techniques, and material selection. You'll walk through a practical example calculating the required thickness for a cylindrical shell and hemispherical heads under internal pressure, gaining insight into how engineers balance safety, performance, and cost in real-world applications. Discover that while formulas are key, a successful design also factors in material choices and manufacturing economics.