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The newly developed wheel rim hardening machines from Tenova LOI Thermprocess adapt flexibly to rolling stock wheels of different shapes and sizes, allowing operation without interruptions to production even if wheel sizes are frequently changed. In combination with a mathematical quenching model, the new machines reduce the time required for tests and also ensure higher process security.
The newly developed wheel rim hardening machines from Tenova LOI Thermprocess adapt flexibly to rolling stock wheels of different shapes and sizes, allowing operation without interruptions to production even if wheel sizes are frequently changed. In combination with a mathematical quenching model, the new machines reduce the time required for tests and also ensure higher process security.

With the individually controlled nozzles, the wheel rim hardening machines are so flexible that they can be used for treating wheels of almost any dimensions. The new control system allows the cooling table program and the adjustment of the nozzles to be changed from batch to batch. This means that batch changes can be completed automatically without any interruption to production. Nevertheless, precise repeatability of the quenching and tempering processes is ensured for each specific batch.

The designers of the hardening tables were faced with the task of developing an extremely robust system without using any sensitive mechanisms. As a result, the new tables have significantly fewer parts than those previously used. The tables consist mainly of standard components available from stock, meaning that spare parts can be delivered quickly.

Especially for plants in countries with high ambient temperatures, it is important to note that the new tables use water temperature ranging from 30 to 35 °C. It is no longer necessary to cool the water to 20 °C.

The new hardening tables immediately proved themselves in practice on a recently installed fully-automated quenching and tempering line for railway rolling stock wheel rims. LOI used a mathematical model developed especially for hardening as well as a quenching program computer. Using this computer, quenching parameters are calculated to ensure that the wheels reach the specified values, even after product changes. Using this model, the company has reduced commissioning times from up to one year to a few weeks.

Source: LOI Thermprocess GmbH

Hardening machines for flexible adaptation

Kategorien: |
Autor: Redaktion

Datum: 25. Nov. 2014

The newly developed wheel rim hardening machines from Tenova LOI Thermprocess adapt flexibly to rolling stock wheels of different shapes and sizes, allowing operation without interruptions to production even if wheel sizes are frequently changed. In combination with a mathematical quenching model, the new machines reduce the time required for tests and also ensure higher process security.
With the individually controlled nozzles, the wheel rim hardening machines are so flexible that they can be used for treating wheels of almost any dimensions. The new control system allows the cooling table program and the adjustment of the nozzles to be changed from batch to batch. This means that batch changes can be completed automatically without any interruption to production. Nevertheless, precise repeatability of the quenching and tempering processes is ensured for each specific batch.
The designers of the hardening tables were faced with the task of developing an extremely robust system without using any sensitive mechanisms. As a result, the new tables have significantly fewer parts than those previously used. The tables consist mainly of standard components available from stock, meaning that spare parts can be delivered quickly.
Especially for plants in countries with high ambient temperatures, it is important to note that the new tables use water temperature ranging from 30 to 35 °C. It is no longer necessary to cool the water to 20 °C.
The new hardening tables immediately proved themselves in practice on a recently installed fully-automated quenching and tempering line for railway rolling stock wheel rims. LOI used a mathematical model developed especially for hardening as well as a quenching program computer. Using this computer, quenching parameters are calculated to ensure that the wheels reach the specified values, even after product changes. Using this model, the company has reduced commissioning times from up to one year to a few weeks.
Source: LOI Thermprocess GmbH