Introduction
Welding is a supreme way to fabricate all types of metal structures. However, it is lesser-known to the people that welding has evolved over the decades. A general comprehension regarding welding is to join two metal pieces together through heat, pressure & additional filler metal which is true. But there is more to it, many new processes have evolved that help in providing strength to the structure.
Welding is used everywhere from onshore to offshore, from land to sea, this showcases that the field is very diverse and equally effective. The modern forms of welding were invented in the 1800s during the industrial revolution in Europe and its traces can be dated back to the Bronze and Iron age. After world war one welding industry started to grow & develop continuously; from using only the SMAW process to developing over 30 different types of welding processes.
In order to channelize the development of welding consumables, the “American Welding Society” was established. In the 20th century, several other welding processes were developed like spot welding, projection welding, flash butt welding, seam welding, etc.
The up-gradation in the field of welding technology is playing a crucial role because in India manufacturing industries are growing at a rapid pace. The major focus of these production units are upon increasing the output and many has started to focus on technological upgradation. If we look around the globe, Indian manufacturers are having direct competition with China, the U.S.A. & European companies who produce quality goods in less time.
Development in the Welding Technology Over the Decades.
Since the last decade, the importance of welding has increased manifolds and welding has become a valuable skill and sought-after trade. The world has seen an exponential increase in the number of welding processes, and metal work specialists are constantly researching ways of creating more. Even with new trials being processed, the most popular processes continue to be SMAW, FCAW, GMAW, GTAW & SAW processes.
Shielded Metal Arc Welding (https://www.dnhsecheron.com/Knowledgebase/studentCenter/what-is-shielded-metal-arc-welding-smaw )
We all are aware of a fact that the shielded metal arc welding process is widely used, it is because the process is simple to understand and affordable which became a prime reason for many fabricators to adopt it. Although the process was first invented in the 1800’s several modifications are done to achieve higher efficiency and still it is very popular.
Flux Cored Arc Welding (https://www.dnhsecheron.com/Knowledgebase/studentCenter/what-is-flux-cored-wire )
As per the need for time a new welding process (Flux Cored Arc Welding) has been evolved where the flux (an ingredient that helps in protecting the weld pool from getting contamination) is filled in the core of the consumable wire. The process is very diverse as it can be performed with & without additional shielding gas. FCAW process has the capability of depositing at higher rates, which has increased its operating efficiency. The latest advancements in the FCAW process are to develop consumables that can operate with more shielding gas blends.
Gas Metal Arc Welding (https://www.dnhsecheron.com/Knowledgebase/studentCenter/gas-metal-arc-welding-gmawmig )
GMAW has been developed in the last century, it is commonly recognized as metal inert gas welding (MIG), in the GMAW process Welding wire and a shielding gas are consumed. The role of shielding gas is to protect the molten metal from atmospheric impurities. This process can be performed in both semi-automatic and automatic ways. The basic equipment for a semi-automatic setup includes a wire feeder which helps in ensuring the consonant supply of voltage and speed, a supply of welding wire, a welding gun, and a shielding gas cylinder.
As the flow of investment has increased in many sectors like automotive, power, shipbuilding, etc; the welding industry is developing new technology to adopt automation and make it a common practice. The prime focus of industry remains constant to be more reliable & stay easier.
Development Within D&H Sécheron Electrode Pvt. Ltd. in the Last Decade.
Over the last decade, the need for welding equipment & consumables grew rapidly, we are aware of the fact the government of India is focusing on infrastructure that can boost businesses. These days the manufacturing units across various industries are demanding quality material that can help in providing an uninterrupted production.
D&H Sécheron (https://www.dnhsecheron.com/products/conventional-welding-consumables ) is a leader in manufacturing welding consumables in India. We offer a complete range of welding products from electrodes to CO2 wires, from flux to filler wires, welding equipment, fabrication solutions, and training to the new welders – which fulfill our motto “Complete Welding Support”.
At D&H Sécheron (https://www.dnhsecheron.com/RNDCenter ) research & development is counted into day-to-day activity which is the prime reason behind the development of 800 plus products. In the last decade, we developed N-number of products that are sustainable & technologically advanced. Let’s discuss some of them:
- DK-18 Ni (MOD) (https://www.dnhsecheron.com/products/conventional-welding-consumables/electrodes-for-low-temperature-service/dk-18ni-mod ): It is an E8018-G basic coated low hydrogen electrode for low-temperature application welding. This electrode is an ideal choice for welding DMR grade fine-grained steel, heavy section fabrication, pressure vessels, penstock pipelines, fine-grained quenched & tempered steels, etc; where high stress & dynamic loading service applications are involved. Its weld metal is of radiographic quality. Typical material grades suitable for welding with this electrodes are- DMR 249A, C/D grades of ASTM SA-414, Grade 55 & 60 steels of SA-516, steels conforming to SA-814, IS: 2002, IS: 2062 and equivalent grade of steels.
- COREFIL-Ni (MOD) (https://www.dnhsecheron.com/products/conventional-welding-consumables/low-alloy-steel-wire/corefil-ni-mod ): It is an E81T1-G low alloy and hydrogen controlled (4ml max) flux-cored wire designed for welding medium tensile steel structures subjected to dynamic loading and impact resistance requirements down to -51°C. This wire gives good performance under CO2 shielding with radiographic quality weld deposits. The wire produces thin & friable slag covering with a shiny bead appearance. Corefil-Ni (MOD) is designed for single and multi-pass welding of ship building grade DMR 249 grade A steels. It is suitable for fabricating heavy & rigid structures, pressure vessels, etc.
- RUTOX-G (https://www.dnhsecheron.com/products/conventional-welding-consumables/stainless-steel-electrodes/rutox-g ): It is an E240-16 special purpose stainless steel electrode, that is most often used to weld AISI Type 240 and 241 base metals. These alloys are nitrogen-strengthened austenitic stainless steels exhibiting high strength with good toughness over a wide range of temperatures. Significant improvement in resistance to wear in particle-to-metal and metal-to-metal (galling) applications. Its Nitrogen alloying reduces the tendency for intergranular carbide precipitation in the weld area by inhibiting carbon diffusion and thereby increasing resistance to intergranular corrosion.
Welding consumables will continue to modify & develop according to the need of time. Several other products were developed like D&H-1429 (https://www.dnhsecheron.com/products/conventional-welding-consumables/electrodes-for-nickel-and-its-alloys/dh-1429 ), Nimotherme-NM1 (https://www.dnhsecheron.com/products/conventional-welding-consumables/electrodes-for-low-temperature-service/nimotherme-nm1 ), etc to meet the industrial requirements.
Conclusion
The field of welding is continuously upgrading, there are some welding processes that have been around a long time and researchers are trying to improve on them. We at D&H Sécheron Electrodes Pvt. Ltd. (https://www.dnhsecheron.com/ ) are aware of the fact that change is constant and one needs to upgrade with time which is why we invest a major chunk of time & money into our research and development. Our reputed customers are aware of the fact that 56 years back we started with manufacturing only SMAW rods and now our manufacturing plants produce various types of consumables such as MIG wire, TIG wire, SAW wire & Flux , Flux-Cored wire, etc.
Our research & development team is continuously exploring new technologies that are coming into the market and trying to align with them in order to provide benefits to our customers. If you are looking for the latest & best quality welding consumables feel free to drop us an email at info@dnhsecheron.net or call/Whatsapp us at +91-98335 50505 or visit our website www.dnhsecheron.com we will provide complete support for your welding needs.
