The cause of the vacuum furnace graphite electrode loss analysis and derogation measures

The cause of the vacuum furnace graphite electrode loss analysis and derogation measures

The service life of graphite electrode in a certain extent determines the production capacity of the hard zinc vacuum distillation furnace and the production cost, the article the cause of the vacuum furnace using graphite electrode loss is analyzed, combining with production practice, put forward the measures to reduce the loss of graphite electrode, received good results.
Using horizontal vacuum furnace hard zinc processing, recovery of indium, germanium, zinc and other valuable metals, muffle furnace with original treatment technique - compared to the electric furnace process, recovery of valuable metals, security, environmental protection and other indicators have greatly improved, created a considerable economic and social benefits. Hard zinc vacuum distillation furnace with graphite electrode as a heating element, converts electrical energy into heat energy, is crucial parts in the vacuum distillation furnace, to some extent, it determines the work ability of the vacuum furnace.
In the production of vacuum distillation furnace processing hard zinc process, although the graphite electrode is easy to consume parts, but if its service life is too short, frequent replacing electrode, not only increase the workload of maintenance and the production cost, and the serious influence production furnace smooth continuation of time, thereby significantly reducing the hard zinc processing. So the analysis of the factors affecting the service life of graphite electrode, and find out effective countermeasures, improve the service life of the electrode, to ensure production run smoothly, improve the hard zinc processing and reduce the production cost is of great significance.

The working principle of the vacuum quenching furnace

The working principle of the vacuum quenching furnace

The vacuum quenching have liquid quenching and quenching. Gas quenching line artifacts to cooling after vacuum heating chamber filled with high purity gases (such as nitrogen for cooling. Practical in gas quenching with high speed steel and high carbon high chromium steel martensite critical cooling rate is low.
Liquid quenching is the workpiece heated in the heating chamber, moved to the cooling chamber filled with high purity nitrogen and immediately into the quenching tank, rapid cooling. If demand high quality of appearance, workpiece vacuum quenching and tempering after solid solution heat to solve and accumulation to soften should still take place in a vacuum furnace.

Oil and gas quenching vacuum furnace quenching big difference

Oil and gas quenching vacuum furnace quenching big difference

Vacuum furnace is refers to under the vacuum state of heating furnace, vacuum furnace is divided into a lot of kinds, have spirit oil quenching, quenching, annealing, tempering and other categories, including vacuum gas quenching furnace and vacuum oil quenching furnace is the most commonly used, although the two kinds of vacuum furnace name is similar, but the gap between the two are high, let's take a look at what are the differences between the two?
1. In the case of type furnace and power equal, oil quenching furnace to some wide adaptation of sex, poor gas quenching furnace to big diameter and the hardenability of steel narrow applicable.
2. In the specification of the furnace, the cost of gas quenching oil quenching, the reason is high because the nitrogen is bigger than the oil consumption, the cycle time is longer, the feed box and furnace components under the cold and heat exchange of the often more wear and tear.
3, with diffusion pump gas quenching furnace to do high speed steel, beryllium copper, stainless steel, titanium alloy higher-value products, and can be used in the vacuum tempering. The oil quenching furnace is not.
4, to the hardenability of good steel, gas quenching is better than the oil quenching of tissue, deformation and surface finish is better.