Stainless steel wire annealing and heating process system

Abstract

According to a stainless steel wire walking route, each stainless steel wire sequentially penetrates through a drying oven pipe section, an exposed section, a wire inlet pipe section, an annealing furnace pipe section, a cooling pipe section and a wire outlet pipe section of the stainless steel wire according to the walking route; in addition, reducing gas is communicated with the joint of the annealing furnace pipe section and the cooling pipe section and flows out towards the opening of the wire feeding pipe to be combusted, and the stainless steel wire is instantly heated; and the subsequent stainless steel wire annealing furnace section is heated to the annealing temperature, cooled by the cooling pool and discharged from the wire outlet pipe. The stainless steel wire annealing equipment is simple and ingenious in structure and low in manufacturing cost and use cost, the reducing gas has multiple combination functions, the stainless steel wire heating efficiency is high, and the metallographic structure is good.

Description

technical field [0001] The invention relates to an annealing technology in the process of wire drawing. Background technique [0002] The heat treatment of stainless steel is generally solution heat treatment in an annealing furnace, which is usually called "annealing", and the temperature range is 1040~1120 °C. The annealing atmosphere generally uses pure hydrogen as the annealing atmosphere, and the purity of the atmosphere is preferably more than 99.99%. If the other part of the atmosphere is an inert gas, the purity can also be lower, but it must not contain too much oxygen and water vapor. [0003] The invention of 2014107925319 provides an annealing process of raw wire for stainless steel welding wire. Before drawing, the coil of the raw wire is annealed and heat treated in an annealing furnace, so that the furnace temperature is gradually raised to the temperature required by the process, and then cooled down and cooled. This technology can be used as the reference c...

AI Technical Summary

Problems solved by technology

However, due to the explosive nature of hydrogen, ammonia decomposition gas is generally used in the industry at present, resulting in a large variable factor in the purity of the protective gas, which requires more airtight control in the design and use of equipment , to ensure that the concentration of the protective gas meets the requirements and achieve the purpose of recrystallization bright annealing

However, the equipment used for ammonia decomposition gas is limited to the annealing furnace, the cost is high, and the cycle is long

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