Sodel has several solutions that will allow you to increase the productivity of the equipment in terms of durability and reduction of maintenance time and costs. Sodel has a complete line of hardfacing welding alloys that adapt to the working situation of your tools and equipment. Here are some of the most popular ones :

Sodel 325 will be useful where there is a direct jolt with rocks ; this alloy has an excellent impact resistance. This exceptional impact resistance is due to the quick hardening of the deposit’s microstructure under shock stress. The hardfacing of hammers and crusher jaws constitutes one of the major applications that will require the use of this alloy.

Sodel 2045 will protect the parts against abrasion when drilling. This product has a superior resistance to fine abrasives. This intrinsic property is due to the multiplicity and the concentration of hard compounds forming in the deposit’s microstructure in the as-welded condition.

Sodel 2024PLUS is to be used on parts facing abrasion under low impacts. This product has an excellent abrasion resistance and a moderate impact resistance. With its unique structure meeting the requirements for resistance to abrasion and impact, this product is very efficient and has brought great satisfaction in regards to its performance on several machinery components (Agriculture machinery, mining equipment, forestry equipments, dredging equipment, public work, etc.).

Please take note that the ideal product to use may vary from one project to another depending on the working condition of the equipment. It is for this reason that the Sodel product line includes more than 50 hardfacing products.

The post ROADS AND BRIDGES CONSTRUCTION first appeared on Sodel International Sale.

With the eye, it is almost impossible to differentiate between these three steels, because it is their properties that identify what type of metal it is.

Here is a chart showing their differences :

We can see that for a same metal volume the weight of the zinc is more than two time higher than aluminum or magnesium and is similar to the one of iron or steel. The point of fusion of the zinc is approximately 2/3 the one of aluminum and magnesium.

Now, how to concretely differentiate magnesium from aluminum. It is possible to find a quick answer to this question. You just need to make a very simple chemical reaction test. The magnesium reacts with table vinegar. You just need to put a little bit of vinegar on a corner of a well cleaned part. If the vinegar reacts with the part (it is possible to see little bubble formation on the part surface), if this is the case, we have magnesium. If there is no reaction we have an aluminum alloy.

support@sodel.com

https://youtu.be/RxAb2ZxIE1A

The post How to differentiate between different types of material ? first appeared on Sodel International Sale.

Last week we had a question from a customer that had to weld a 304H stainless steel part using a 308H electrode. The contract specification was requesting a ferrite number between 3 and 6 on the weld beads. They tough that they would be in line with specifications in using a 308H coated electrode with a ferrite number of 5,5 (calculated from WRC 1992 diagram). What was the final result when analyzing with the Ferritscope probe ? A ferrite between 0 and 2 FN; how could it be possible ?

One of the most powerful chemical elements affecting ferrite level is the dissolved nitrogen in the weld bead. For evaluating ferrite level, welding rod manufacturers consider an ideal nitrogen level of 0,06% in any stainless steel (300 series) weld metal. This is the nitrogen content you should get if you weld their rods using prescribed parameters. It is important to understand that nitrogen is not added intentionally in the coated rods. As a matter of fact, nitrogen which dissolves in the austenitic stainless steel comes from the ambient atmosphere. To obtain this low ideal nitrogen level of 0,06% in the weld metal, you have to maintain a very short arc.

In the present case, the project requested to realize 308H weld beads containing 94 to 97% of austenite and 3 to 6% of ferrite. If the customer uses a too long arc, he should obtain a dissolved nitrogen level in the weld bead over 0,06%. Nitrogen being a powerful austenitizer (a chemical element which stabilizes austenite to the detriment of ferrite), that’s why the measured ferrite number is lower than expected. In this situation you have two possible ways to obtain the requested ferrite : shorten the arc length using the same rod rated at 5,5 FN or keep a long arc using a rod rated at 8 or 9 FN. If you choose the second solution, the long arc will give you higher nitrogen content which should lowers the weld metal ferrite to the requested range. Because a higher than normal nitrogen level can have an effect on the weld bead mechanical properties, you should carefully consider this last solution.

support@sodel.com

The post welding method can effect the ferrite number first appeared on Sodel International Sale.