neis (Thailand) sells welding materials for brazing and related products developed and manufactured by themselves. We are not just a "materials shop", but we aim to propose solutions that satisfy our customers and raise the level of brazing technology among Thai engineers. In this article, we would like to introduce our company's initiatives to achieve this goal.

Initiative ①
Develop and manufacture original brazing filler metals to meet customer's applications

The main welding-related materials for brazing we are developing and manufacturing brazing filler metals and fluxes. Brazing filler metals are metal materials that act as an adhesive during "brazing" that include aluminum, copper, silver, etc., and are classified according to JIS standards as follows.

◾️ Copper brazing (Cu)：Steel material, stainless steel
◾️ Brass (Cu, Zn) ：Steel materials, nickel, and copper and its alloys
◾️ Silver brazing (Ag, Cu, Zn) ：Metal materials other than aluminum and magnesium
◾️ Phosphorus copper brazing (Cu, P)：Copper and its alloys
◾️ Aluminum brazing (Al, Si)：Aluminum alloys (heat exchangers)
◾️ Nickel brazing (Ni, B, P)：Stainless steel, heat-resistant alloys (EGR for engines)
◾️ Gold brazing (Au, Cu, Ni)：High corrosion-resistant products (jewelry)
◾️ Palladium brazing (Pb, Ag) ：Heat-resistant products

These brazing filler metals differ in their properties and suitability for the metals to be joined. Furthermore, the brazing filler metals also affect the airtightness and strength of the joint, so it is important to select the correct brazing filler metal to ensure reliable brazing.

However, in reality, there are a huge variety metals for brazing, and the current situation is that JIS standard products alone are not sufficient. Therefore, by customizing and providing order-made brazing filler metals, we offer the most suitable molten material for our customers' applications.

In the unlikely event that a defective product is found, we will investigate the cause and take responsibility until the end, so please leave it to us with peace of mind.

Initiative ②
Workshop aimed at reducing the defective rate of brazing

The second initiative is to hold a "brazing workshop". Brazing is a common technique for metal joining. Even with easy-level brazing, the rate of defects in Thailand is higher than the global industry standard. One of the reasons may be that the workers are working without sufficient training. To improve this situation, we are holding workshops for our customer's engineering staff.

＜Main contents of the workshop＞
■ Difference between fusion welding and brazing
■ Definition of brazing
■ Classification of brazing methods
■ Phenomenon that occurs during brazing (liquid wetting, capillary action)
■ Mechanism of flow of brazing filler metal (metal reduction)
■ Flame brazing
■ Types of brazing filler metal
■ Selection of flux
■ Defect cases

A renewed understanding of the basics of brazing and how it works will lead to a lower defect rate. It has been well received by our customers as it also helps to raise the awareness of the engineers working at a site.

▲ Workshop materials (example)

Neis Co., Ltd. has a history of more than 70 years as a welding and joining professional in Japan. Based on our technology and know-how, we provide the best solutions for brazing in Thailand.

If you have any questions about brazing filler metals, please contact us using the inquiry form.