Continuous mesh belt furnaces

mesh belt furnace : carburizing, quenching, tempering of car parts, metal parts, electronic parts, etc.
mesh belt furnace
Application
The furnace is used for quenching, and tempering of medium and
small-size bearing ferrule, roller, self-drilling bolts and other parts under aprotective atmosphere.
Structure
The production line is mainly comprised of vibration charge-in machine, charge-in machine, pre-cleaning machine, wire mesh type quenching furnace, quenching oil tank, post-cleaning machine, and wire mesh type tempering furnace.
Magnetic Charging Machine
The machine is comprised of lifting stand, driving chains, strong magnet, cycloidal pin wheel reducer, hopper, and mesh belt. The hopper and the lifting stand are placed on the ground for easy charging by the workers. The speed is adjustable with the frequency conversion device.
Precleaning Machine
The machine is comprised of the cleaning tank, driving system, rinsing system, and oil and water separator. The machine removes the dirts of the workpieces, which are dried after cleaning.
Vibration Distribution Machine
The cleaned workpieces is sent into the vibration hopper, and further sent into the quenching rack by vibration of vibration motor and high-pressure spring.
Mesh Belt Carburizing and Quenching Furnace 
The quenching furnace is the key part of this heat treatment line. It is mainly comprised of charging machine stand, mesh belt driving device, heat preservation material, heating device, atmosphere supply device, workpiece descent device, and temperature control device.
Oil Quenchign Tank 
The tank is 20m3, and 2m deep. It has the fuctions of heating, circulation, and cooling. The cooling liquid is controlled within a certain range automatically, which keeps the workpieces evenly cooled. The workpieces descent passage has recycling device for better hardenability of the workpieces.
Horizontal Type Post-cleaning Machine
The machine is of the horizontal type, and is mainly comprised of cleaning tank, driving system, rinsingsystem, and oil and water separator. The workpieces are cooled in the oil quenching tank, lifted up onto the mesh belt, and further sent into the cleaning machine. Right above the cleaning machine is the strong-force rinsing device. The workpieces are spray-rinsed by the rinsing device driven by the jetting pump. At the flank of the cleaning machine is 1 oil and water separation device, which separates the oil from the workpieces, and recycles it. The distance between the cleaning machine stand and the quenching furnace is reduced in order to protect the workpieces from collision with one another, and the descent passage has buffering device.
Roller Mesh Belt Tempering Furnace
The mesh belt tempering furnace is comprised of furnace shell, charging machine stand, mesh belt driving device, inner roller table, heat preservation material, heating device, fan recycling device, discharging machine stand, and temperature controller. The furnace top is mounted with 5 high-speed mixing fans to improve the temperature uniformity of the whole furnace chamber. The workpieces after tempering treatment has small hardness diffrence, and has unified color.
The mesh belt is supported by stainless steel roller rods and driven through cycloidal pin wheel reducer.
Electrical Control System
The low voltage electrical equipment are of the famous brand CHINT, and intermediate relay of OMRON. Heating function is controlled by power controller achieving an accurate control on temperature. The heating system works with low voltage and large current ransformer so as to improve the service life of the electrical heating wires. Each heater is protected with voltage and power regulator, which has functions of soft start-up, soft cut-off, constant current, current limitation, phase shortage protection, over-current protection, and over-heat protection. The control loop has lockage device, system fault, and overloading alarms.