Quality appraisal of iron ladle capping device

Iron ladle capping device consists of iron cans, insulation materials, heating equipment, capping devices, air valves, smoke, and flue gas cooling devices. Iron cans containing molten steel are usually made of cast iron, steel and other materials.
iron ladle capping device is a commonly used equipment in the steel smelting process. It is mainly used in steel production processes such as converters and electric arc furnaces. The iron ladle capping device in the converter can insulate the molten steel, reduce oxidation and prevent the molten steel from being contaminated, ensuring the stability of the quality of the molten steel. In electric arc furnaces, the iron ladle capping device can insulate the charge, control the oxidation of molten steel, etc., ensure stable quality of molten steel and improve the yield of steel.
In the case of quality appraisal of the iron ladle capping device, Zhongke Testing can provide quality appraisal services for the iron ladle capping device.

According to the heating method, it can be divided into electric heating, gas heating, coke oven gas waste heat heating and other methods.
can be divided into fixed, mobile, vertical and horizontal, cable lifting and other types according to the installation method.

GB 5226.1-2008 Mechanical and electrical safety Mechanical and electrical equipment Part 1: General technical conditions
GB 5083-1999 General principles for safety and hygienic design of production equipment
GB/T 5310-2017 Seamless steel pipes for high-pressure boilers
GB/T 20878-2007 Stainless steel and heat-resistant steel grades and chemical composition

** Steel Company (hereinafter referred to as the demander) signed a contract with ** Machinery Manufacturing Company (hereinafter referred to as the supplier) in 2021 and ordered a total of 15 units of two different models of "iron ladle capping devices (machine)" to be installed on the hot metal frame. After the equipment involved in the case was delivered, after repeated debugging by the supplier, the buyer believed that the equipment still had problems such as dimensions, material structure, and certain safety defects that were inconsistent with the agreement, and the equipment could not be used normally.
In order to clarify whether there are quality problems with the quality of the "iron ladle capping device (machine)" involved in the case, the buyer submitted an application for quality appraisal of the "iron ladle capping device (machine)".
appraisal analysis results: The
appraisal analysis expert group discussed the relevant information and on-site investigation of the iron ladle capping device involved in the case and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions:
1, the two types of "iron ladle capping devices" involved in the case, when the cover is open, the rotating arm will block the protective shed and compress the escape space for personnel, which does not meet the standard GB 5083-1999 "General Principles for Safety and Hygiene Design of Production Equipment", there are potential safety hazards;
2, the fixing method of the two types of "iron ladle capping devices" involved in the case on the molten iron frame, the manufacturing method of the rotating frame, and the materials of the insulation cover and rotating arm do not meet the requirements of the "Technical Agreement";
3 , the material of the fuel tank and the hydraulic valve brand of the two types of "iron ladle capping device" involved in the case comply with the requirements of the "technical agreement", but the selection of the oil pump brand does not meet the requirements of the "technical agreement";
4, under the relevant requirements of the "Tendering Technical Documents", the height and width dimensions of the "** type iron ladle capping device" involved in the case do not meet the requirements of the "technical agreement".