During my days as metallurgiest this was a tough issue and there is not an easy solution for this. Designed specifically for the foundry industry, to measure molten metal temperatures at the furnace, or pour, without disrupting the process. The sensor is a thermocouple of type b, r or s depending upon the requirement of the customer. Continuous temperature measurement of molten steel johnson. Without exception, care should be taken to avoid the following circumstances.
The probe is dipped into the liquid metal after the ladle is filled, that is. The wm1 is sturdy, accurate, easy to use, portable and dependable, making it the ideal molten metal temperature measuring instrument for ferrous foundries and steel plants. The temperature of liquid metal is commonly measured using thermocouples fig. This instrument can be matched with not only fast thermocouple for quick and accurate temperature measurement, but also industrial thermocouple to for continuous temperature. Nowadays, molten metal temperature measurement is almost exclusively done by means of expendable thermocouples in combination with appropriate hardware and digital temperature measuring instruments. However, installation conditions and sensor placement play a significant role in the quality of the temperature measurement. Each of these molten metal applications presents a distinct challenge for a temperature measurement sys tem. These instruments are designed to replace the old system of expensive, disposable dip thermocouples used to measure molten metal temperatures. In the production of steel in a smelting furnace such as a converter, to measure molten steel temperature is extremely important to both process control and metal. Measuring system cellacast for measurement of molten metals. If we do n ot measure metal temperature correctly we do have high loss of metal. Fykays molten metal temperature system mmts combine sophisticated electronic design with downtoearth practical needs of the metallurgist, resulting in a. Temperature measurement in molten steel handling and casting.
The measurement is easy and requires no special skill. Molten steel handling and casting temperature measurement. Development of new technique for continuous molten steel. Molten aluminum temperature measurement williamson ir. Products molten metal temperature measurement system. The sensor is fixed to one end of a long paperboard tube in order to allow for easy immersion into molten. Optical measurement of liquid metal temperatures viking. The ts1 is sturdy, accurate, easy to use, portable and dependable, making it the ideal molten metal temperature measuring instrument for ferrous foundries and. Temperature measurement and control during steel processing ensures worker safety, protects equipment and maintains product quality. Optical measurement of liquid metal temperatures by albert book temperature is one of the most critical process parameters affecting the resulting quality, strength and working properties of a metal casting. Foundry liquid metal temperature measurement systemametek. Temperature readings will vary, depending on the immersion depth and the position of the probe. High brightness led nixie tube is applied with half and triple digit on singlesided display and the letter height is 120mm with threecolor status light.
Surface slag temperature i have seen as much as 50 oc off based on slag composition which is generally glass and is oxide based melt. Generally, sublance method is only utilized for direct measurement of the steel temperature. Molten metal temperature must be within strict limits determined and required by the metallurgical and quality department, before the heat or melt may be. Contactless temperature measurement on metal surfaces optris. Optical measurement of liquid metal temperatures foundryplanet. Applications for noncontact temperature measurement of metal surfaces. Following the development of rapid methods of steel analysis the need for greater control of bath temperature has become important, particularly in melting. Depending on mill size and purpose, a steel mill may carry out all steps of steelmaking from smelting iron ore to rolled. The probe is dipped into the liquid metal after the ladle is filled, that is before pouring even begins. Thermtip is our disposable temperature sensor for instant measurement of molten metal temperature. Is there any other method of measuring the temperature of the hot molten metal in the furnace. Thermoelectric temperature measurements with noble metal thermocouples dipped in the molten metal bath actually provide the best solution.
Temperature is of crucial importance as the molten metal passes from the melting furnace or forehearth to the transfer ladle or pouring ladle fig. This is a process that requires an enormous amount of electricity and smelters are often located close to hydroelectric power stations. The sensor is fixed to one end of a long paperboard tube in order to allow for easy immersion into molten metal. Aluminum smelters take raw bauxite and convert the alumina found in bauxite into the metal we know as aluminum. How to measure temperature of molten metal in induction. The temperature of molten metal may be measured using an infrared temperature sensor. Infrared temperature sensors for metals applications.
A disposable thermocouple probe attached at the tip of the sublance is intermittently inserted the steel. Noncontact ir temperature sensors from process sensors monitor the temperature of molten pouring streams, ladle and torpedo cars, continuous casting and spray chambers. Data accuracy is subject to the precision with which the foundry operator performs the measurement. Moreover, this method only measures the temperature at the metal surface. Thanks to modern infrared thermometers, the temperature of molten metal can. Fykays molten metal temperature system mmts combine sophisticated electronic design with downtoearth practical needs of the metallurgist, resulting in a stateofart, versatile, rugged, reliable electronic system.