economy

The Taean Friendship Glass Factory has recently updated the PLC control system of its tempered glass production process, thus increasing production capacity two times as compared to previously.

This year, the factory received an additional assignment of producing and supplying hundreds of thousands of square metres of tempered glass needed for the construction of the Sinuiju Combined Greenhouse Farm.

Therefore, the factory found the solution in decisively boosting the production capacity of the tempered glass furnace.

The focus of attention there was to remodel the PLC control system, the core of the operation of the furnace.

While conducting dozens of rounds of observation of processes to find out rational control variables, officials and technicians of the factory collected necessary technical data in contact with the relevant field in order to intensify research.

In the course of strenuous thinking and industrious inquiry, the technicians got familiar with dozens of control factors consisting of reciprocating heating and cooling velocities in the furnace according to glass thickness, entrance and exit velocities in the heating zone, the rotating speeds of entrance and exit rollers, etc. and found out the control variables contributing to fully ensuring such quality indexes as impact strength, number of fragments and tortuosity.

On this basis, programmers carefully analysed the characteristics of existing algorithms and succeeded in creating an innovative program capable of facilitating the operation of the furnace with rational control variables.

Then the factory rationally arranged the heating wires of the tempered glass furnace and upgraded in an original way the loading noses and supports of belts, the shafts of tool grippers and sensors, the glass transfer rubber roller and the like, which are used for cutting, double corner processing, general processing, washing and drying and other machines, thereby remarkably boosting the capacity of the furnace.

After launching into production last August, it became able to feed plate glass per charge 1.5 times more than previously, while reducing the heat treatment time, thus doubling the tempered glass production capacity and finishing ahead of schedule the production of tempered glass needed for the construction of the Sinuiju Combined Greenhouse Farm.