Category: News

Melter participates at AISTech 2022

Melter’s steel division (MeltShop) will participate in the AISTech 2022 expo, the most important fair for the metal and steel industry in North America. From May 16th to 18th in the city of Pittsburgh, Pennsylvania (USA), the commercial team of this division will be present to establish business relationships, increase its position as a leading company in the value chain of the steel industry. This year, the AISTech will have the participation of more than 7 thousand professionals, suppliers, steel…

10 Recommendations for Air-Cooled Heat Exchangers (ACHE) Installation.

For proper installation of air-coolers, it is necessary to take as a guide the installation, start-up, operation and maintenance manuals supplied by the equipment manufacturer and to read the instructions in detail before performing any maneuvers on the equipment, it is important to read the procedures, safety and warning instructions, which allow the safe and continuous use of the air – coolers. The following  are the 10 recommendations  for  the  installation  of  an  Air – Cooler: 1.- The equipment should be leveled on the anchor bolts,…

Nanotechnology Innovation

A well-known fact about the operation of the electric arc furnace is that the water-cooled panels take away a considerable amount of the heat produced during melting cycle resulting in a reduced efficiency. Currently it is known that having a good slag cover will help reduce energy loss, damage to the pipes on the panels and increase life to a certain extent. However, the slag is not enough to keep the heat inside the furnace and so water continues to…

PNEUMATIC TEST

What is it? It is an alternative procedure that replaces the hydrostatic test, using pressurized inert gas in the water cooled components with an ultrasound leak detection equipment. Objective: Replace the hydrostatic test by a pneumatic pressure test in order to avoid remnants of fluids (water or antifreeze) inside the water-cooled circuits and detect even the smallest leaking spots before shipping the fabricated items to our customers. Remnants of liquids from hydrostatic test will freeze when exposed at low temperatures…

MAKING A DECISION ABOUT THE USE OF SLAG RETAINERS IN THE ROOF & SHELL PANELS

During the years, there have been opposite opinions about the use of slag retainers in the Roof & Shell panels. Even though the retainers help to retain the slag, when you weld them to the pipe there is a grain growth in the steel microstructure that weakens the pipe’s strength in the weld heat affected area; normally the thermal fatigue stress cracks start appearing in the neighborhood of these seam welds on the pipes exposed to temperature. So, adding slag…

MAINTENANCE OF SHELL AND ROOF PANELS PIPE AND PLATE PANELS

Different physical damages due to: Scrap impact Arcing Exposition to radiation of electric arc. Burner flame rebound Corrosion Thermal fatigue of the pipe base material When prevention is not possible, the option is to periodically verify the integrity of the panels in order to detect the problems on time. Periodical inspection of the panel’s exposed surface To determine if there’s any existing damage that might result in a failure and repair it before it causes a major issue in the…