Soldering of stainless steel with tin

Are you interested in soldering stainless steel with tin from the supplier company AvecGlob? Here you will find the necessary information on this topic.

Appointment

Soldering is often used to connect stainless steel in areas such as roofing and water pipes (water pipes). Soldering uses fillers with lower melting points than stainless steel — no more than 450 ° C. The strength of the joint is usually lower than brazed or welded joints.

While the presence of a strong oxide film makes it difficult to solder stainless steels than carbon steels, using the right methods, stainless steels can be successfully connected by soldering.

Surface preparation

Thorough cleaning of the steel surface in the area of the joint is the key to successful soldering. Oil and grease can be removed with solvents, and brushing with stainless steel brushes or abrasive emery cloth can be used to eliminate other forms of contamination. Allowed a slight roughness of the surface of the abrasive and improves the adhesion of the solder. It is advisable to perform the soldering operation immediately after cleaning. If this is not possible, the parts can be pre-coated with solder to protect them.

Fluxes

To remove oxide from the prepared surface, aggressive fluxes are required. As a rule, phosphoric acid based fluxes are suitable, they have the advantage that they are chemically neutral if the residues remain after the soldering process is completed.

Supplier — AvekGlob Company — offers various types of products from tin of domestic and foreign production, which meets the requirements of standards. The products are offered at affordable prices from the manufacturer. The supplier guarantees the timely delivery of products to any address specified by the consumer.

Heat

All traditional heating methods can be used for soldering stainless steels. However, the thermal conductivity of austenitic stainless steels is relatively low and their expansion coefficient is high, so make sure that the entire bond region is evenly pressed to the soldering temperature without overheating.

Solders

For soldering stainless steels, conventional tin-lead solders can be used. It is recommended that the tin content is more than 50% to ensure good adhesion strength and minimize the risk of galvanic corrosion in the brazed joint during maintenance. Purely tin solders correspond well to the color of stainless steels and do not darken during operation.

A number of tin-silver solders are recommended for stainless steels, since they are more durable than tin-lead solder, combined with high plasticity.

The appropriate solder should be selected for the expected operating conditions. Factors to consider include mechanical stress, potential corrosion, color matching, contact with food or water, and so on.

Finishing operations

Removing all traces of flux residues immediately after soldering is important, both to avoid discoloration and to prevent corrosion during operation. Suitable hot water, possibly with the addition of a mild detergent. Preferably, running water is used, and a non-metallic fiber brush can be used to accelerate the process.

Supplier — AvekGlob Company — offers to purchase tin in a wide range of profiles and technological applications. Products can be bought at a price formed on the basis of European and world standards. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.