Gas-shielded welding has also been connected to “natural gas.”
Release Date:
2015-03-25 19:39
Against the backdrop of China’s manufacturing transformation and upgrading, Shandong Company has kept pace with the times by focusing on enhancing product quality and reducing manufacturing costs, thereby ensuring the company’s sustainable development.
The primary method of connecting steel structures is welding, and weld quality plays an indispensable role in ensuring the structural integrity and safety of buildings. High‑quality gas‑shielded welding not only guarantees internal quality but also meets stringent requirements for the aesthetic appearance of steel structures. Accordingly, the Shandong branch has embarked on upgrading its welding infrastructure, transitioning from the previous “gas‑powered era” (using small bottled gases) to the “natural gas era” (employing large cylinder‑filled gases).
Upon entering the Shandong Company’s plant, three striking white gas cylinders stand prominently in front of the workshop: an oxygen cylinder, an argon cylinder, and a carbon dioxide cylinder. The argon and carbon dioxide cylinders are the company’s newest additions; their outlets are connected to automated gas‑mixing equipment that adjusts the blend ratio according to the specific welding material, enabling the production of either pure carbon dioxide shielded arc welding or argon–carbon dioxide mixed‑gas shielded arc welding—thus meeting customers’ diverse requirements for gas‑shielded welding. So, what advantages do these two new members bring to our welding processes?
1. Enhance weld quality and improve aesthetic appearance.
Stable air‑tank pressure also ensures weld quality. In particular, mixed gases help reduce metal loss, produce well‑formed welds with minimal spatter, and deliver excellent surface finish.
II. Reduced production costs
Although both are carbon dioxide gas, due to lower packaging costs and smaller purchase quantities, the cost of purchasing gas in large cylinders is 0.6 yuan per kilogram lower than that of small cylinders. Based on the company’s production volume over the past few years, this translates into annual cost savings of more than 120,000 yuan. The company invested 320,000 yuan in this initiative, which will pay for itself in less than three years.
III. Reduce labor intensity, save working time, and improve production efficiency.
Bottled gases have limited capacity, requiring frequent cylinder changes during welding; switching to large gas cylinders eliminates the time spent on refilling. Moreover, when using mixed gases, spatter is reduced, minimizing surface spatter on welded components and shortening the subsequent grinding process.
4. Increased the effective space in the workshop.
After switching to large gas cylinders, the gas supply pipeline is routed underground into the workshop and connected directly to the welding equipment. The space previously used to store small cylinders has been cleared, increasing the usable floor area. At the same time, this enhances safety by eliminating the risk of accidents caused by collisions or mishandling of numerous cylinders stored in the workshop.
In 2015, competition in the steel structure fabrication and processing market intensified, and China’s economy was grappling with the growing pains of transformation and upgrading. Under these circumstances, the company will face heightened market pressure; only by delivering superior products, continuously enhancing product quality, and implementing comprehensive cost‑saving measures can it earn market recognition and avoid being edged out by fierce competition.
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