News

Aug 22,2020

Advantages of steel-shell furnaces

Since entering the 21st century, technological upgrades and the development of new products have become the cornerstone for survival in this century. But have the industry-wide technological upgrades and new product developments you’re familiar with actually been realized? Today, let’s take a closer look at medium-frequency induction furnaces with steel shells. What are the advantages of these medium-frequency induction furnace products with steel shells? Many people may not be very familiar with this particular product.

Aug 24,2020

Safety Operating Procedures for Medium-Frequency Induction Furnaces

Next, let’s take a closer look at the specific operational procedures we should follow for the safe operation of medium-frequency induction furnaces. 1. Before starting the furnace, carefully check that all electrical equipment, the water-cooling system, and the copper tubing of the induction coil are in good condition. If any issues are found, do not start the furnace. 2. If the melting damage inside the furnace hearth exceeds the specified limit, it should be repaired promptly. It is strictly forbidden to carry out melting operations in crucibles with excessively deep melting damage. 3. The energization and furnace startup must be supervised by a dedicated person. After energizing the furnace, it is strictly prohibited to touch the induction coil or cables. The operator on duty must not leave their post without authorization and should pay close attention to the external conditions of both the induction coil and the crucible. 4. When loading materials, carefully inspect the charge to ensure there are no flammable, explosive, or other hazardous substances mixed in. If any such substances are found, they must be removed immediately. Cold materials and wet materials are strictly prohibited from being directly added to the furnace.

Aug 25,2020

Safety Operating Procedures for Electric Furnaces in the Steelmaking Workshop

Safety Operating Procedures for Electric Furnaces in Steelmaking Workshops:1. Operators must strictly adhere to the General Safety Regulations and the Electric Furnace Process Operating Procedures.2. Operators must wear work uniforms and safety helmets.3. The electric furnace’s limit switches and interlocking functions must be complete and effective.4. Water pipes, various gas pipelines, hydraulic and lubrication lines, electrical cables, and protective devices for all types of equipment must be properly installed and maintained.5. Verify that all safety protection devices on the equipment are intact and that covers and guards are free from damage.6. Ensure that electrical equipment is free from exposed wires and electrical leakage; portable drills, flatcar cables, and powder spray cans must be equipped with leakage protection devices, and floor-sweeping cables must be free from exposed wires and electrical leakage.7. When loading materials into the electric furnace, a dedicated person must direct the overhead crane, and the area around the electric furnace must be carefully monitored.

Aug 25,2020

Features and Structure of Steel-Cased Furnaces

The furnace shell of steel-shell furnaces—particularly those with small capacities—typically uses aluminum alloy or stainless steel for the outer casing. These furnaces feature a reasonably designed structure, small footprint, easy installation, simple maintenance, and low maintenance costs. The furnace body generally employs a mechanical tilting mechanism (equipped with a gearbox).

Aug 26,2020

Common faults of medium-frequency induction furnaces?

Fault phenomenon 1: When the No. 1 intermediate-frequency furnace is started, the reactor vibrates violently, emits abnormal sounds, and its door shakes. Cause 1: The reactor coil is burned out or the coil has grounded. 2: The capacitor has broken down and is connected to the casing (the discharge coil must be removed before measurement can be performed).

Aug 27,2020

Common Faults and Solutions for Medium-Frequency Furnaces

Generally, faults in medium-frequency furnaces can be categorized into two main types based on the fault symptoms: complete failure to start and failure to operate normally after starting.

Aug 28,2020

What is the working principle of an intermediate-frequency induction furnace regulator?

The medium-frequency induction furnace regulator section is equipped with four regulators: a medium-frequency voltage regulator, a current regulator, an impedance regulator, and a reverse commutation angle regulator.

Aug 29,2020

What are the reasons for molten iron leakage through the furnace lining in a medium-frequency induction furnace?

Today, let’s take a look at common accidents involving medium-frequency furnace bodies, such as furnace leakage and furnace penetration. If an accident occurs and no measures are taken, it could lead to rupture of the coil copper tubes, causing molten iron to come into contact with the cooling liquid and triggering an explosion. Next, let’s examine the causes of furnace penetration and water leakage in medium-frequency induction furnaces: First, material quality factors related to furnace construction: Typically, quartz-based acidic furnace lining materials are used. The quartz sand and quartz powder should have a silicon content of over 99.5%, exhibit oily crystals, be transparent, and free from impurities. Generally, high-purity quartz sand produced by Xingchen Refractory Raw Materials Co., Ltd. in Yima City, Henan Province, is employed (with a silicon content of 99.85%, a hardness of 8, a density of 2.65, and a refractoriness of 1850°C).

Aug 30,2020

Common Maintenance Methods for Medium-Frequency Induction Furnaces

Method One for Repairing Medium-Frequency Induction Furnaces: The repair approach for medium-frequency furnaces is similar to traditional Chinese medicine diagnosis—observation, auscultation and olfaction, inquiry, and palpation. Specifically: 1. Observation: Conduct a visual inspection to check for loose wiring, loose screws, dust accumulation, dampness, or signs of arcing. If any issues are identified, address them promptly. 2. Auscultation and Olfaction: When the equipment is powered on, listen carefully for any unusual sounds. For example, check whether the reactor is making strange noises or whether the furnace body is emitting arcing sounds. If any abnormalities are detected, resolve them immediately. 3. Inquiry: During repairs, maintenance personnel should ask the operators and furnace workers about any unusual conditions they’ve observed during equipment operation. Gain a thorough understanding of the situation before proceeding with the inspection.

Aug 31,2020

Metallurgical Principles of P and S Removal During Steelmaking Molten Steel Refining

(1) Metallurgical Reaction Principle of De-phosphorization: Phosphorus exists in molten steel in the form of Fe2P, which has high solubility in the molten steel. It readily diffuses from the slag into the molten steel and reacts with (FeO) present in the steel, releasing heat in the process.