Kiln quality appraisal

Furnace is a device that performs high-temperature heating treatment of materials. It is widely used in metallurgy, chemical industry, electric power, machinery, building materials and other fields. Its basic principle is to use fuel, energy or other external sources of heat to bring the material to a specified time and temperature to achieve the required chemical changes or changes in physical properties.
Zhongke Testing and Appraisal Institute can provide quality appraisal services for ceramic kilns, cement kilns, glass kilns, enamel kilns and other kilns, and make accurate appraisals in terms of product design analysis, load analysis and product quality analysis.

According to the types of calcined materials, it can be divided into ceramic kilns, cement kilns, glass kilns, enamel kilns, etc. The former can be divided into continuous kiln (tunnel kiln), semi-continuous kiln and intermittent kiln according to the operation method.
can be divided into flame kiln and electric heating kiln according to the heat source. According to the condition of the heat source facing the green body, it can be divided into open flame kiln, muffled flame kiln and semi-muffled flame kiln.
can be divided into kiln car kiln, push plate kiln, roller bottom kiln (roller kiln), conveyor belt kiln, walking beam kiln and air cushion kiln according to the body carrier.
can be divided into single-channel kiln, double-channel kiln and multi-channel kiln according to the number of channels.

GB/T 16618-1996 General principles of industrial furnace insulation technology
GB 9078-1996 Industrial furnace air pollutant emission standards
GB/T 28475.1-2012 Industrial furnace control device Part 1: General technical conditions
GB/T 32974-2016 Heat balance test and calculation method for regenerative industrial furnaces in the steel industry
GB/T 28475.2-2012 Industrial furnace control devices Part 2: Performance evaluation method

A chemical factory signed a furnace construction contract with an engineering company for the production of chemical products. After the furnace was built, the chemical plant found serious quality problems in the furnace during use, such as unstable temperature control and easy damage to the furnace material, which seriously affected production. The two companies filed disputes over this matter before the local court.
Our company was entrusted by the court to evaluate whether the furnace involved in this case meets the technical requirements of the custom-made contract.
identification and analysis results: The
quality analysis expert group discussed and comprehensively analyzed the relevant information, on-site investigation and inspection data, and inspection and testing data of the "furnace" involved in the case, and made the following quality analysis conclusions. See: The
case involves large cracks, detachment and damage in the refractory bricks on the outer wall of the inner cylinder of the kiln. The welds of the outer platform and upper panels are cracked. The bottom is welded and reinforced with stiffeners and the top is tightened with wire ropes. This poses a major safety hazard and cannot be used normally.