Preparation of metal for welding
Are you interested in preparing metals for welding from the supplier company AvecGlob? Here you will find interesting information on this topic /
Necessity of preparation
The raw metal can not be welded to the adjacent product qualitatively.
Depending on the tools available and the overall purpose of the welded joint, there are several ways to prepare the metal to obtain a quality weld. Any foreign material in the welding area can cause connection defects. For a new metal, it is a preservative or a lubricant that prevents oxidation. These factors are often ignored, but always lead to a weak weld.
The preparation of the metal for welding depends on the selected connection technology. For MIG welding, it is not required that the metal be absolutely clean. On the other hand, for welding aluminum, a non-consumable electrode (TIG) requires a metal that does not contain any foreign impurities.
Methods of preparing metal for welding
The use of a corner grinder with a flap disc is excellent for steel welded with MIG or TIG technology. Soft steel does not require the surface to be completely clean, so the removal of the oxide film can be done using grinding machines, after which the surface of the future seam should be degreased with compounds that do not contain a significant percentage of volatile substances. On thin sheet metal, grinding should be carried out carefully, so as not to remove excess metal, and not to weaken the zone of the future weld seam.
Sandpaper is excellent for preparing for welding stainless steels, further welded by the methods of MIG or TIG. The grain size of the paper should not be higher than 80, so as not to scratch the prepared part.
Supplier — AvekGlob Company — offers at affordable prices from the manufacturer various metals and alloys, in the quantity and assortment that are required by the customer. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Preparation for welding highly contaminated or difficult to weld products
If the metal that is to be welded is very rusty and is not suitable for grinding or removing using a grinding machine, another preparation is by abrasive blasting. After this treatment, the metal may look clean, but it still needs to be cleaned with non-toxic solvents.
The abrasive can sometimes grab pieces of other metals that can lead to corrosion or corrosion of the metal that is to be welded.
Features of the preparation for welding of aluminum and its alloys
When preparing aluminum, the order of preparation is different. Aluminum is very susceptible to contaminants, so to obtain clean welds, the cleaning process must be carried out in the reverse order.
First, the metal is degreased, then the surface film of the oxides is removed. For this purpose, stainless steel brushes are used in the area to be welded. The wire brush should only be used for aluminum to avoid pickling with other metals. Then the surface is degreased again.
Supplier — AvekGlob company — offers to purchase various metals and alloys in any quantity and range of sizes. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.