Soldering despite appearances, it is not as simple a matter as we can sometimes see on films. It is a quick way of joining two things together, but it requires precision and skill.

What is soldering?

Brazing is a method of joining various components in which a molten adhesive fills the space between the closely fitting surfaces of the parts to be joined through capillary forces. This method is mainly used to join metals together, but there is no obstacle to using it with non-metallic materials as well.

Soldering is one of three methods of permanently joining materials. We can also distinguish between welding and welding. What is the most distinctive feature of soldering is the joining of materials in a solid state - this is what distinguishes soldering from welding and welding. The joining of materials at low temperatures has allowed soldering to develop significantly throughout history, and importantly, this feature is still its core strength.

soft and hard soldering

What makes soldering so popular?

  • Circumventing the complex and difficult metallurgical and technological conditions for joining metals and their alloys by other bonding methods
  • Very much the temperature range of soldering processes. The temperature can vary from 100 to as much as 1,400 degrees Celsius, depending on the requirements of the
  • Wide variety of brazed joint designs
  • Can join together almost all metals and metal alloys and even materials with very different physical and chemical properties
  • Joining metals with non-metals
  • Joining parts of different shapes and sizes
  • Ease of mechanisation and automation of soldering processes

Methodsoft vs. hard soldering

We can divide brazing into two ways, depending on the melting temperature of the binders:

  1. Soft soldering - must be carried out at a temperature not exceeding 450 degrees Celsius, most commonly around 320 degrees. This method is most often used for bonding parts with low stresses at the joints and low working temperature, these can be electronic circuits, electrical wiring, sheet metal. Metals that are joined using soft-bonding are steel, copper, zinc, brass and their alloys.
  2. Brazing - Similarly, brazing must involve brazing adhesives with a melting point above 450 degrees Celsius - usually up to 2000 degrees. It is used to join carbon, molybdenum, tungsten, nickel and chrome steels, as well as gold, silver, copper, brass and bronze.

We can divide hard solders into 8 types, which differ due to their basic ingredient, which has quite an impact on the properties of the binder:

  • Aluminium solder (AL grade) - melting point is in the region of 575-630 degrees Celsius.
  • Silver solder (AG grade) - the most versatile binder, can be used for soldering most metals, with a melting point of approx. 420-1020 degrees Celsius.
  • Copper-phosphorus solders (CP grade) - copper solders with phosphorus added, used for soldering copper, brass and bronze. They conduct electricity well and are extremely strong. The melting point is 645-890 degrees Celsius.
  • Copper solder (CU grade) - pure copper used for soldering all steels and nickel. The melting point is approximately 1070-1085 degrees Celsius.
  • Nickel solders (NI grade) - used for soldering stainless steel and alloys with cobalt, tungsten or molybdenum. The melting point is between 880 and 1070 degrees Celsius.
  • Cobalt solders (CO grade) - used exclusively for the brazing of hard cobalt alloys.
  • Gold solder (AU grade) - has good soldering properties and resistance to oxidation at high temperatures.
  • Palladium-loaded solders (PD grade) - have 40 to 60% of palladium, but their primary component is either silver or copper.

Soldering courses and training:

The ability to solder is very useful in the job market, and that goes without saying. Employers look favourably on people who have this skill. It is not easy, but it is worth taking the time to enrich yourself with a new competence.

soldering courses and training Courses and training in this area are run by the most competent people on the market. They are themselves specialists in their field and pass on their knowledge in a skilful and pleasant manner, making the learning process even easier. Participation in such a course and the knowledge gained can result in a job being found more quickly and, in addition, can become helpful in house and yard work.

As soldering is one of the most popular methods of metal bathing, it will be very useful for electronics beginners. The course can illuminate a little and deepen the knowledge of what metals and electronic components can be joined together.

The course in this subject covers brazing and soft-soldering of copper or aluminium tracks used in central heating, refrigeration and air-conditioning installations. It consists of a theoretical and practical part, after which it is time to collect your certificate.

According to a regulation of the Minister of Economy from 2000, any person who wants to work with soldering must have a certificate of completion of such a training course. An exam is not needed to complete the whole thing and to be able to do soldering work, a course certificate is completely sufficient. Training courses are paid for and the price depends on the location and length of the course.

If you are interested in this topic, don't wait and sign up for soldering training. It will improve your competence in the eyes of your employer, but will also bring a lot of benefits outside of work.