Place your trust in the global market leader for rail joining

With the Thermit® welding processes nearly all rails of various profiles and grades worldwide can be continuously welded. Thermit® consists of aluminum granulate and iron oxide which after igniting exhibits a strong exothermal reaction. The extreme reaction heat is able to create liquid steel up to 3000 °C without an auxiliary energy source and therefore to weld the ends of rails. Using this process we guarantee you the safe joining of rails in heavy haul and high-speed networks while at the same time increasing travel comfort and the lifetime of the rails.

As an end-to-end supplier of aluminothermic welding we develop, manufacture, and supply all components required for our Thermit® welding processes. Among the main components are:

• Welding compound (Thermit® portions)
• Refractory molds
• Crucibles
• Tools and machines used to carry out the work

The Thermit® welding of the Goldschmidt Group ensures that all over the world high speed, heavy haul, trams, and underground railways run quietly and safely in an environmentally manner on continuously welded track. Thermit® weldings are carried out by our trained and experienced welding personnel.

Our experienced welding specialists carry out arc welding with the submerged arc welding technique and the manual metal electric arc method. This low-cost alternative is particularly attractive for the light rail networks of municipal public transport systems. In mainline networks, this technique is used where space is too limited for other welding processes, e.g. near to frogs.

Arc welding can be used almost anywhere and enables the welding of all rail profiles and transitions to other profiles.

Insulated rail joints are required to determine the position of the train for the purpose of safe signal control. We produce and market various types of insulated joints with different properties according to the type of force application, installation, and manufacture. Their common advantages are: they offer the highest safety, reliability, and durability – in all climates. All our insulated joints are manufactured from steel or polymer composites.

Benefits:

• Exact adjustment of the torque is made using an electric switch
• Reduction of transportation effort due to on-site installation in track
• Reliability – robust and durable
• Time-saving – short shutdown and quick and easy installation
• The most powerful tool on the market
• Flexible use thanks to non-existing length specifications as for fitting parts

Features:

• Available for many profiles of flat-bottom rails and grooved rails
• Available as reinforced plate or fishplate
  Can be provided as 4 or 6-hole model
• Force -and form-fit load transmission
• Homologated at Deutsche Bahn since 1970 and used by nearly all major railways worldwide

Benefits:

• Versatile: offered for all basic rail profile types
• Proven solution: successfully and dependably installed for years
• Increased safety due to precise assembly in the workshop
• Flexible: customized solutions possible (lengths according to customer demand)

Features:

• Possibility of use till track velocity 250 km/h
• Using fishplates in variants with 4 or 6 holes
• Possibility of rail ends hardening in the joint area
• Tested according to WG 18 / DG 11 (Mechanical requirements for joints in running rails)
• Geometric values protocol issued for each piece

Factory assembled for highest durability above 30 tonnes axle load with our new prefabricated Glued Insulated Rail Joint you are choosing the most durable and reliable in every type of climate.

Handle for efficient documentation of the preheating process.

The SMARTWELD RECORD records and documents the preheating parameters for THERMIT® welding via the GOLDSCHMIDT DIGITAL APP. The welder is given the specific individual steps for the THERMIT® welding in a user-friendly way and without errors. This ensures both optimum use of welding materials and that welding is performed to standard. Process parameters can be saved centrally using the GOLDSCHMIDT DIGITAL APP. The data is uploaded directly to our database solution DARI® so that data can be analyzed and accessed globally.

• Benefits:
  Efficient quality control and documentation of construction and maintenance measures
• Improved quality, decrease in welding errors
• Use independently of weather
• Simple, fast training, the product is easy to introduce
• Complete evaluation of THERMIT® welding

Automated preheating of the THERMIT® weld.

By automating the preheating and working without compressed oxygen, the propane-air torch SMARTWELD JET optimizes your work process. Due to the avoidance of execution errors and the documentation produced on-site by means of the GOLDSCHMIDT DIGITAL APP, the economic efficiency of your welding activities increases. The data is uploaded directly to our database solution DARI® so that data can be analyzed and accessed globally. SMARTWELD JET ensures safe and reproducible execution of the preheating process – guaranteeing high weld quality.

Benefits

• Reduced transportation and logistics workload through the elimination of the oxygen bottles
• Simplified handling, thus increased occupational safety
• Relief of the welders due to discontinuation of the setting and monitoring tasks
• Efficient quality control and documentation of construction and maintenance measures
• Complete evaluation of THERMIT® welding
• Thermal protection of the casting mould

Benefits

• Preheat Thermit® welds without the need to use technical gases – No gas bottles on the track
• Reduced preheating times compared to similar competitor products thanks to higher heat input
• Can be applied in all Thermit® welding processes
• The alternative solution to conventional preheating, e.g. for working underground

Features

• Offered as a kit with one preheating blower, one complete set of petrol and compressed air hoses, one preheating burner for petrol/ compressed air
• Dimensions L x W x H = 926 x 404 x 615 mm (excluding handles and wheels)
• Blower pressure: max. 0.8 bar
• 4-stroke petrol motor: 4.2 KW and 3.6 l tank capacity
• Handles and wheels optional

Benefits

• Total elimination of as hazardous goods declared igniters for import and transportation
• Significant increase of work safety due to omission of hot and open burning igniters
• Applicable for all crucibles supplied by Elektro-Thermit
• The service life of one charged battery for at least 20 ignition processes, which means more than one shift before recharging
• Cost-saving consumables

Features

• Initial spark using electrodes
• Voltage < 60 V (according to DIN 62135)
• Shockproof and impact resistance frame
• Integrated LED-lights as well as warning light & alert when ignition starts
• Weight: 1.8 kg (without case); Dimensions: 340 x 220 x 75 mm incl. battery
• Offered as a kit in a convenient case incl. recharger, one battery,1 pack/10 piece single-use electrodes