Thermit Welding Consumables

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Crucible Lining for Thermit Welding

Magnesium oxide crucibles are Thermite welding supplies. Magnesium Oxide Crucible Lining are sintered in very high temperature, so it should be protected from any moisture at all time, otherwise it may cause failure when welding.

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Magnesium Oxide Crucible liner technical specifications

Crucible Lining

 

1. Magnesia crucible liner matches UIC60 rail thermal conductivity part.

2. Crucible liner MgO >96%.

3. Service life more than 30 hot melt welding joints, which depends on the welding operator.

4. Magnesia crucible liner bottom hole diameter is 32mm, due to heating process, tolerance ±0.5mm is allowed.

5. The crucible is sintered at a very high temperature, so it should always be protected from moisture, otherwise it may lead to welding failure.

6. The physicochemical analysis of the magnesia crucible liner is as follows.

Magnesium Oxide Crucible Physical testing and chemical analysis

Magnesium oxide SiO 2 Fe 2 O 3 Calcium oxide C Bulk density CCS (cold compression strength) 0.2Mpa RUL (refractoriness under load)
% % % % % g/cm3 MPa
96.76 0.91 0.78 1.15 —— 2.93 59 1680
96.78 0.93 0.75 1.14 —— 2.93 59 1680

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Thermit Welding Video

Magnesia crucible

A magnetite crucible is a container made of magnetite, a type of iron oxide mineral, which is used in the process of thermite welding. Thermite welding is a welding process that involves the use of a mixture of metal powder and a metal oxide, which is ignited to produce a high-temperature reaction that melts the metal and fuses it together.

The function of the magnetite crucible in thermite welding is to contain and control the high-temperature reaction that occurs during the welding process. The crucible is designed to withstand the extreme temperatures and pressures that are generated during the welding process, and to prevent the molten metal from escaping or contaminating the surrounding area.

One of the advantages of using a magnetite crucible in thermite welding is that it allows for precise control of the welding process. The crucible is designed to maintain a consistent temperature and to provide a controlled environment for the reaction to occur, which helps to ensure that The welding is performed accurately and with minimal risk of error or failure.

Another advantage of using a magnetite crucible in thermite welding is that it helps to reduce the risk of contamination. Because the crucible is designed to contain the reaction, it helps to prevent the molten metal from coming into contact with any foreign materials or contaminants that could compromise the integrity of the weld.

Overall, the use of a magnetite crucible in thermite welding is an important factor in ensuring the success and safety of the welding process. It provides a controlled environment for the reaction to occur, and helps to ensure that the welding is performed with precision and accuracy , while minimizing the risk of contamination or failure.

 

Two types of crucibles for aluminum thermal welding of steel rails

Disposable crucible technology, where the welding material requires flux, sand, high-temperature matches, sealing sand and a disposable crucible.
Multi-purpose crucible technology, where solder, sand, high-temperature matches, sealing sand, multi-purpose crucible holder, multi-purpose crucible liner, as well as self-fusing plugs and sealing sand are required.


CRS magnetite crucible Advantages

1. tensile strength of welded joints is 5%~18% higher than peers
2. Welding quality testing meets railroad requirements.
3. Three-piece die sand type can meet the welding requirements of rail cross-section, weld width, and the use of special processes
4. Price is 8%~25% lower than peers.
5. Free training, humanized service.
6. Free samples

 

Magnetite crucible is specially used in the aluminothermic welding process.

Steel rail aluminum heat welding flux is mainly used in railroad line maintenance, line overhaul, and new line construction.
Use scenarios: such as railroads, subways, factories' lifting rails, elevated railroads, city rails, etc.


CRS Main export countries

Philippines, Vietnam, Thailand, Indonesia, Singapore, Malaysia, Myanmar, Laos, Cambodia, Sri Lanka, Korea, Russia, Turkey, Tajikistan, Pakistan, Bangladesh, etc.

 

Thermite Powder/Thermite Welding Powder

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