Alat Uji Ketebalan adalah sebuah perangkat yang digunakan untuk mengukur seberapa tebalkah suatu benda/material. Hal ini menyangkut kemudahan penggunaan dan menampilkan pengukuran langsung. Selain mengukur ketebalan material beberapa alat uji ketebalan lain memiliki fungi dan mampu mengukur hanya ketebalan…
Engine-driven welders are generally used when electric power is not available for arc welding. Usually these are outdoor applications. However, engine-drive welders are often used for indoor applications when it is not convenient to supply power to electric "plug-in" arc welders. These indoor situations include everything from minor repair jobs to major plant shutdowns. When operating engine-driven welders indoors, vent the exhaust outside if at all…
TIPS :
Reprinted courtesy of Welding Design and Fabrication magazine.
Follow the rules of thumb offered here for selecting welding equipment, preparing base materials, applying proper technique, and visually inspecting weldments to ensure…
TIPS
With so many choices of welding machines on the market today, how does a novice welding operator choose what he or she needs? There are a couple of key questions that can guide you through the process and narrow down your selection to make the choice a little easier. Ask yourself the following:
When it comes to welding processes, TIG is one of the most demanding. Creating a high-quality TIG weld requires good, consistent starting performance and arc stability even at low amperages. This can be challenging for even the most skilled welder, especially with a conventional TIG power source – But now with Lincoln Electric’s Micro-Start Technology™ there is nothing standing between the operator and a good weld.
Open root welds on pipes can be made three to four times faster than GTAW by using the Surface Tension Transfer® process. When integrated with an internal spacer clamp into a new automatic orbital pipe welding system, even faster production is possible, with no lack of fusion.
Pipe welding codes, whether for applications in the field or in the plant, require high-quality root pass welding.…
The dual-wire Tandem MIG™ process continues to gain popularity as a means to increase production in automated arc welding applications. The process follows trends established early in the welding industry of reducing welding costs by developing dual-wire processes for greater productivity. Early developments in multiple wire welding focused on the submerged arc process. The availability of high-powered inverter power sources and Waveform…
Definisi las adalah suatu proses penyambungan plat atau logam menjadi satu akibat panas dengan atau tanpa tekanan. Yaitu dengan cara logam yang akan disambung dipanaskan terlebih dahulu hinga meleleh, kemudian baru disambung dengan bantuan perekat (filler). Selain itu las juga bisa didefinisikan sebagai ikatan metalurgi yang timbul akibat adanya gaya tarik antara atom.
…
WELDING SYMBOLS
Special symbols are used on a drawing to specify where welds are to be located, the type of joint to be used, as well as the size and amount of weld metal to be deposited in the joint. These symbols have been standardized by the American Welding Society (AWS). You will come into contact…
Gas Tungsten Arc Welding (GTAW) atau sering disebut Tungsten Inert Gas (TIG) merupakan salah atu dari bentuk las busur listrik (Arc Welding) yang menggunakan inert gas sebagai pelidung dengan tungsten atau wolfram sebagai elektroda.
Skema dari GTAW dapat dilihat dalam gambar dibawah, Pengelasan ini dikerjakan secara manual…
Teknik Pengelasan Bag. 2
C. Pengkutuban Elektroda
1. Pengkutuban Langsung
Pada pengkutuban langsung ini, kabel elektroda dipasang pada terminal negative (-) dan kabel…
Teknik Pengelasan Bag. 1
Pengelasan (welding) adalah salah salah satu teknik penyambungan logam dengan cara mencairkan sebagian logam induk dan logam pengisi dengan atau tanpa tekanan dan dengan atau tanpa logam penambah dan menghasilkan sambungan yang kontinyu.
Lingkup penggunaan teknik pengelasan…
David Almy, Welding Engineer -- Miller Electric Mfg. Co.
Q: I have gas flow from the gun, but not a clean weld. How can I solve this?
A: Porosity and black welds indicate poor gas coverage or contamination. To ensure good coverage, check for: proper gas flow (CFH), leaks in the system (loose fittings, cuts in the…