Faster electrification of glass furnaces has exposed a skills gap, and people who understand electrode operation and maintenance are in short supply. From 2026, companies, associations and universities are running electric melting and molybdenum electrode training on several tracks, covering selection, monitoring, maintenance and replacement, with the resulting talent dividend supporting industrial upgrading.
Industry News
Industry news for high-temperature melting: electrode selection, service-life performance and raw-material price movements in glass furnaces, fiberglass tanks and rare-earth electrolysis, supporting procurement and retrofit decisions.
WeiBeam · Electrode solutions for high-temperature melting
145 articles in this category · Page 3 of 5
Article list
In 2018 dual-glass module adoption accelerated, and photovoltaic glass consumption and thin-glass demand grew together. Thin-sheet forming is highly sensitive to furnace temperature stability, making deep electric boosting and high-purity molybdenum electrodes an important configuration for thin-glass lines to control defects and keep quality stable.
Converting container glass furnaces from flame melting to electric boosting starts with a heat balance calculation, then electrode layout and power supply provisions. The article reviews pre-retrofit assessment items, how electrodes relate to flow patterns, control strategy and points to watch in the rollout, stressing that a retrofit must be designed for the furnace's actual conditions and cannot be copied from another line.
Commoditized competition in building ceramics is forcing glaze quality upgrades, and electric glaze furnaces are replacing small flame kilns with precise temperature control and clean melting. Glaze melts carry many fluxing components and are highly corrosive, so how well dense, high-purity molybdenum electrodes adapt will determine the reach of this lower-tier market.
Cold repair is the main window for replacing electrodes and repairing the tank in a glass furnace. The article explains how to backward-schedule procurement across specification review, teardown inspection of old electrodes, spare quantity calculation and arrival-to-installation coordination, with a deviation handling table, a time budget and a staged preparation checklist, plus the ancillary parts and acceptance steps that are easily overlooked.
The share of electric boosting power in new glass furnaces keeps rising, and deep electric boosting is becoming standard on high-end lines. Higher current density and total power impose systematic upgrading requirements on molybdenum electrode diameter, density, arrangement and power supply design.
Glass wool and rock wool differ in raw materials and melting route, and once a line is converted to electric melting the electrode becomes the critical component of the melting step. This article analyzes how batch composition swings and melt viscosity changes affect electrode wear, and lists three items to verify when upgrading equipment, for reference in the retrofit and operation of insulation lines.
Electric melting and deep electric boosting change the service environment of furnace refractories, intensifying melt convection and tightening stray-current constraints. Coordinated design of high-grade fused-cast materials and molybdenum electrodes has become key to extending tank life and stabilizing glass melt quality.
Glass-ceramics are mainly based on the lithium aluminosilicate system, with high melting temperatures and strongly corrosive melts, so all-electric furnaces have become a common choice. This article analyzes how lithium-rich melts wear molybdenum electrodes, the design constraints of small furnaces and frequent changeovers, and requirements for current density control and delivery service, for glass-ceramic line operators.
The batch for neutral borosilicate tubing carries a high boron oxide content, which raises melting temperature and viscosity, so electrode configuration needs separate consideration. This article discusses material selection, current density control and the effect of boron volatilization on the electrode zone, and sets out the current, cooling water and fining temperature parameters to watch in operation, for reference in pharmaceutical glass furnaces.
Domestic production of medium-borosilicate pharmaceutical glass and the expansion of photovoltaic rolled glass are changing electrode requirements in melting furnaces. This article compares the melting characteristics and electrode concerns of the two categories, explains the purity constraints of pharmaceutical glass and the high-current-density wear mechanisms in large furnaces, and gives reference ranges for key electrode properties, replacement window management and a selection checklist.
Around 2017, domestic display glass substrate lines began shipping in volume and the localization rate climbed steadily. Substrate glass places extreme demands on melt purity, and electric melting and deep electric boosting with molybdenum electrodes have become key quality-control processes, driving demand for high-end molybdenum electrodes.
In 2017, concentration in the rare earth industry continued to rise, and total volume management and environmental constraints pushed equipment upgrades in the smelting step. Molten salt electrolysis of rare earth metals places higher demands on corrosion-resistant electrodes and lining materials, and dense molybdenum electrodes are finding new application space beyond glass in electrolysis cell retrofits.
If packaging is damaged in transit, molybdenum electrodes should neither be signed for without qualification nor written off as a total loss immediately. This article sets out the assessment steps, from impact location and dimensional re-check through to segregation and feedback, as a reference for site teams.
Winter transport brings large temperature differences between the inside and outside of a container, so condensation readily forms inside the packaging. This article covers the moisture barrier layers used for molybdenum electrodes, handling precautions and steps to take on arrival, helping limit the effect of damp on surfaces and threads.
As solar glass furnaces grow larger, electrode count rises, maintenance space narrows and shutdown costs climb. This article analyzes the maintenance difficulties, discusses what online monitoring can provide as a basis for judgment, how zoned power supply isolates faults, and how planned electrode changes and maintenance windows should be organized, for reference in the operation of large glass furnaces.
In 2016 solar installations were released in a concentrated wave and construction of solar glass lines visibly accelerated. Large calendering and coating furnaces are generally fitted with electric boosting systems, and the twin demands of high melting rate and high transmittance are pushing molybdenum electrode volume, sizes and consistency standards up together, with the supply chain entering a volume ramp-up cycle.
Sapphire and YAG crystal growth depend on high-temperature vacuum or reducing atmospheres, where molybdenum heaters, heat shields and electrode-type components shape the temperature field. This article compares the operating conditions of the two crystal types, explains the purity, outgassing and dimensional requirements for molybdenum parts, and analyzes the process foundations and delivery points for electrode manufacturers extending into crystal furnace supply.
Around 2016, standard revisions for molybdenum, tungsten and other refractory metals accelerated, and requirements for grading, testing methods and quality traceability of molybdenum electrodes became clearer. Standards turned from reference documents into procurement acceptance criteria, shifting the focus of competition from price toward consistency and service life.
Stable operation of an all-electric glass-ceramic line depends on the batch, the electrode load and the thermal regime working together. This article explains how to distribute power across melting, fining and homogenizing, analyzes the relationship between convection and the fining section, and sets out the handling order for common problems such as current fluctuation and a batch pile that does not melt out.
Container glass lightweighting keeps cutting glass per bottle and transport cost, but raises the bar on melt homogeneity and refining quality. Installing side-entry molybdenum electrodes in the melting area for electric boosting has become a common retrofit route for bottle and jar furnaces to raise output and stabilize quality, and the retrofit economics deserve careful calculation.
Forehearths and flow holes in fiberglass tank furnaces are cramped and the glass flows fast, so electric heating takes on the job of making up local heat loss. This article describes the electrode forms and layout approach in these two locations, discusses how temperature uniformity and glass scour affect electrode life, and gives four routine inspection methods for reference on fiberglass lines.
Around 2017, digital retrofits of glass furnaces accelerated, and closed-loop control of furnace temperature, pressure and glass level became standard on new lines. Electric boosting, the fastest-responding controllable heat source, was brought into unified control, raising requirements for operational data and product consistency of molybdenum electrodes.
Electric boosting and fully electric melting change both the flue gas volume and the pollutant sources of a glass furnace, so the end-of-pipe abatement system has to be rechecked accordingly. This article explains how a lower gas volume affects desulfurization, dedusting and DeNOx operating conditions, discusses the interaction between furnace pressure and the temperature regime, and sets out the order in which a retrofit should be assessed for environmental and thermal engineering staff.
In February 2016 the linked review and approval system for pharmaceutical packaging materials and drugs was formally implemented, further clarifying registration thresholds and quality standards for borosilicate glass. Upgrades of pharmaceutical glass furnaces began, and high-purity, dense molybdenum electrodes, whose corrosion products do not contaminate the glass melt, became the preferred choice for borosilicate electric melting solutions.
As electrode replacement volumes in glass furnaces grow and molybdenum prices stay low, recycling spent molybdenum electrodes has become a new business for some companies. Remanufacturing and remelting-purification routes each suit different cases, and the industry needs qualification, testing and labeling rules to keep substandard material from disrupting the market.
Starting from the actual sequence of molybdenum plate rolling and cogging, this article discusses mill stiffness and shape control, hammer tonnage and striking method, and how heat treatment furnace temperature uniformity affects yield and microstructure. It sets out three checks to run before replacing equipment and a joint equipment-and-process acceptance approach, for shops evaluating equipment plans.
Drawing on molybdenum ore resources and smelting bases, the domestic molybdenum processing industry has gradually formed a regional cluster layout. From molybdenum powder and rods to molybdenum electrodes and refractory products, division of labor within the clusters keeps deepening, purchasing radius shortens, and the supply efficiency and cost advantages of domestically made molybdenum electrodes are increasingly evident.
In an electric melting furnace the electrode passes through the electrode block into the glass melt, and the selection of the surrounding refractories directly affects operating stability. This article discusses corrosion resistance, thermal expansion matching and installation clearance, explains how electrode block and port design influence melt flow and sealing, and lists the operating checks for leakage, sticking and block temperature for furnace design and maintenance reference.
The Paris Agreement took effect in 2016 and debate on the glass industry's low-carbon transition is heating up. Comparing electric melting furnaces with gas-fired furnaces across thermal efficiency, direct emissions and energy mix shows that electrification of the melting step is clearly the trend, and molybdenum electrodes are the key material on that path.