Annealing furnace and annealing process for martensitic stainless steel 2Cr13 wire rods

Abstract

The invention belongs to the technical field of annealing equipment, and particularly relates to an annealing furnace and an annealing process for martensitic stainless steel 2Cr13 wire rods. The annealing furnace comprises a box body; a front furnace door and a rear furnace door are fixedly installed at the two ends of the box body respectively; a partition plate is fixedly installed in the box body; a material hole is formed in the partition plate; the partition plate divides the interior of the box body into an annealing chamber and a cooling chamber which are hollow; an air inlet pipeline and a circulating pipeline are fixedly installed on the upper surface of the box body; an exhaust pump is fixedly installed on the circulating pipeline; a plurality of infrared heating rings are installed in the annealing chamber; a first groove is formed in the front furnace door; a first spring is fixedly installed in the first groove; and the lower end of the first spring is fixedly connected with a furnace door baffle. According to the annealing furnace and the annealing process, through the arrangement of the furnace door baffle, gaps formed between the furnace doors and the interior of the box body as well as the rod wires can be reduced; heat loss is reduced; and meanwhile, nitrogen can be recycled, so that the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of annealing equipment, in particular to an annealing furnace and an annealing process for a martensitic stainless steel 2Cr13 wire rod. Background technique [0002] Heat treatment furnaces are divided into annealing furnaces, quenching furnaces, tempering furnaces, normalizing furnaces, and quenching and tempering furnaces. They are mainly used for annealing of large carbon steel and alloy steel parts; tempering of surface quenched parts; heat treatment processes such as stress relief annealing and aging of weldments. Heating methods include electric heating, oil, gas, coal, and hot air circulation. Annealing furnace is a new type of heat exchange equipment. The annealing furnace is an energy-saving periodic operation furnace with a super energy-saving structure and a fiber structure, saving 60% of electricity. [0003] There are also some technical solutions about annealing furnaces in the prior art. Fo...

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology, the height of the furnace door opening when the wire rod enters the furnace door is fixed during annealing, so that the heat lost is high, the heat loss is large, and the use of nitrogen to absorb heat requires a lot of nitrogen, heat recovery is not complete, and resources are wasted. problem, the present invention proposes a kind of annealing furnace and annealing process of martensitic stainless steel 2Cr13 wire

Images