Vacuum atmosphere box furnace

Vacuum atmosphere box furnace uses:
Vacuum atmosphere box furnace according to customer needs all kinds of furnaces, universities, research institutes, industrial and mining enterprises to meet the high temperature sintering, metal annealing atmosphere reduction and quality testing is widely used in materials, physics, chemistry, metallurgy, chemical industry, new energy development and other fields.Vacuum atmosphere box furnace hearth Imported insulation material - high purity polycrystalline alumina fiber, the use of B-type double platinum and rhodium thermocouple temperature and AL artificial intelligence regulator 708P temperature controller automatic temperature control, using artificial intelligence AL adjustment algorithm, no overshoot, industrial-grade single-chip microprocessor, four and a half A / D conversion and digital correction, filtering technology to ensure measurement accuracy of up to 0.2 (± 1 ° C). Furnace shell with double ventilation design, so that the furnace can be rapidly cooling the door using circulating water to ensure that the door is not deformed in the first heat quenched, thereby ensuring air tightness of the furnace, the furnace can work in a multi-atmosphere, improve its scope of use. S of the epoxy-based resin paint made from galvanized stainless steel inside and outside the box, the outer coating of high hardness, attractive appearance, practical.
Vacuum atmosphere furnace features:
1, the control precision: ± 1 ° C furnace temperature uniformity: ± 1 ° C (depending on the size of the heating chamber may be).
2, microcomputer control, easy to operate, programmable, automatic heating, automatic insulation, automatic cooling.
3, fast heating (heating rate of 20-40 ° C / min adjustable).
4, energy (furnace imported fiber made of high temperature resistance, rapid thermal quench).
Furnace fine spray corrosion-resistant acid, furnace, furnace isolation with air-cooled furnace wall temperature close to room temperature.
6, double-circuit protection (over-temperature, over-pressure, superfluidity, paragraph even, power outages, etc.).
7, furnace materials imported refractories, good insulation properties, high temperature resistance, rapid cooling and rapid heat.

High-temperature box resistance furnace advantages

High-temperature box resistance furnace, crucible resistance furnace used in various industrial and mining enterprises, universities, research units, small pieces of steel hardening, annealing, tempering heating. Carbon heater male used in steel mills, iron foundries, laboratories for carbon and sulfur exposition purposes. Therefore, high-temperature furnace with a temperature control device, control thermocouple temperature measurement instructions conditioning, active saving temperature in the furnace. Analog and digital temperature controller is divided into two kinds. Today's sx series resistance furnace is the product of the old reform and upgrade replacement product, with the first registered domestic chic produced initiative of the instrument response xmt series temperature controller and thermocouple, the temperature of the furnace control cutting accuracy higher and more automation. Another variety of special specifications can be customized large box-type furnace, tube furnace, tempering furnace pit. With programmable computer temperature controller can control the speed, temperature band.
When using high-temperature box resistance furnace, heat treatment equipment to work, we still have to pay attention to the following points:
1 Do not use over the course of the maximum temperature of the resistance furnace.
(2) when the sample taken must be installed to intercept the power to prevent electric shock.
3 loading door closed when the sample taken time should be as short as possible to reduce the furnace life.
4 Suppression of the furnace absorbed any liquid.
5 shall not be stained with water and oil sample into the furnace; shall not be moistened with water and oil clip loaded sample taken to avoid accidentally touching the fire;
6 sample taken when mounted to wear gloves to prevent burns.
7 The specimen should be placed on the furnace center, not misplacing.
8 furnaces and not just touch around the sample.
9 should be completed after intercepting power and water supply.
10 management staff are not allowed to manage, may manipulate the high temperature resistance furnace, should be strictly in accordance with the procedures for execution control equipment.

Vacuum heat treatment furnace experiment points to note

1. Vacuum furnace should have a fast-cooling devices. Cooling water pressure should be greater than 0.2Mpa, flow should be adjustable.
2. Heating: Put the workpiece, usually the first pre-heated before pumping to 6.67Pa when heated.
3. Heating process, the workpiece will be deflated and the furnace materials, the vacuum decreased.
4. Cooling gas: steel is generally used 99.995% purity nitrogen, high temperature alloys used 99.999 percent nitrogen or argon, titanium using 99.995% argon.
5. Vacuum furnace part of all active connections rubber O-ring sealed connections, the parts are cooled by water.
6. Vacuum tempering, annealing, solution treatment and vacuum vacuum aging process with conventional heating temperature is generally the same as the heating temperature.
7. Quenching the workpiece under vacuum, vacuum quenching oil should be used, this oil has a low saturated vapor pressure.
8. Vacuum furnace maintenance should state in a vacuum or under nitrogen charge to avoid the usually do not inhale, absorb moisture.
9. Domestic vacuum furnace pressure rise rate should not exceed 1.33Pa / h, some foreign enterprises standard 0.67Pa / h.
10. Titanium alloy vacuum furnace process, not with nitrogen as the cooling gas, because of titanium and nitrogen at high temperatures, to form titanium nitride golden yellow.
11. Vacuum heating mainly by radiation, the workpiece should be maintained in the furnace space.