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Method for producing beryllium-bronze flat ingot by natural-gas walking beam furnace

A stepping type heating furnace and heating furnace technology, applied in the field of non-ferrous metals, can solve the problems of aggravating the degree of surface oxidation of beryllium bronze ingots, reducing the utilization rate of beryllium bronze ingots, poor control effect, etc., so as to achieve uniform ingot temperature, Fire prevention, good uniformity

Active Publication Date: 2013-05-22
CNMC NINGXIA ORIENT GRP
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Problems solved by technology

However, the traditional walking heating furnace adopts the continuous combustion control method, because the continuous combustion control method is often restricted by the adjustment of fuel flow and the accuracy of measurement, resulting in poor control effect and uneven mixing when the furnace operates at low temperature , wasting energy
If the amount of air is insufficient, the incomplete combustion of natural gas will produce black smoke, which will reduce the thermal efficiency and pollute the environment; if there is excess air, it will not only take away a lot of heat energy, but also waste fuel
At the same time, excessive air will also increase the surface oxidation degree of the beryllium bronze slab, reducing the utilization rate of the beryllium bronze slab

Method used

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  • Method for producing beryllium-bronze flat ingot by natural-gas walking beam furnace

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Embodiment Construction

[0025] This walking heating furnace is heated by natural gas, and the calorific value of natural gas: Q 低 ＝ 34.91MJ / Nm 3 ;Contact pressure in front of furnace: 8~10 kPa; Low calorific value: 34.91 MJ / Nm 3 . The beryllium bronze slab furnace goes through the preheating section, heating section, and soaking section to complete the heating and heat preservation process of the billet, and realize the heating temperature and ingot temperature uniformity required by the rolling process.

[0026] 1. Oven: Baking the furnace at 600°C for 4 hours before loading the furnace. In order to ensure safety, a safety interlock device is installed between the heating equipment and the fan to strictly prevent gas backflow and explosion accidents. When the outlet pressure of the blower or the pressure of the gas main pipe is too low, the quick shut-off valve on the gas main pipe will be automatically closed, and the nitrogen purge system will be opened. At the same time, an audible and visual...

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Abstract

The invention relates to a method for producing a beryllium-bronze flat ingot by a natural-gas walking beam furnace, which is characterized in that: by using digital pulse combustion control technology, the temperature of the heating furnace is controlled by adjusting the duty cycle of the combustion time. The invention adopts a multi-segment multi-region controlled heating mold, and by using digital combustion control technology - pulse combustion control technology and by adjusting the air-fuel ratio, uniform heating and precise control of the beryllium-bronze ingot casting are realized in micro-reduction atmpsphere, and thus the purpose of batch production is reached.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metals, in particular to a method for producing beryllium copper slabs using a natural gas walking heating furnace. Background technique [0002] Beryllium bronze is a supersaturated solid solution copper-based alloy, which is a typical precipitation hardening and heat treatable alloy. Beryllium bronze ingots have high requirements on temperature control during the heating process, and the homogenization annealing temperature range is narrow. If the temperature is too high, it will easily cause overburning, and if the temperature is too low, it will easily crack during hot rolling, and the final rolling temperature of hot rolling cannot be guaranteed. less than production requirements. The current hot-rolled beryllium bronze uses electric heating before billeting, which has high energy consumption, slow heat penetration, and fast aging of resistance wires, especially not suitable for large-s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/08
Inventor 吴文博岳丽娟焦晓亮崔书辉
Owner CNMC NINGXIA ORIENT GRP
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