KT Series

KT series high-end lead-free hot-air reflow parameters

KT  series  high-end lead-free hot-air reflow soldering machine

Sampling port for whole-process oxygen concentration inspection 

Nitrogen System

Independent detection of oxygen concentration in the whole process

1.The nitrogen quantity in the whole process can be controlled,and each temperature zone can be controlled in an independent closed loop,so that the oxygen concentration range can be controlled within 50-200ppm.

2.When the oxygen concentration in the whole process is within 200ppm the nitrogen consumption is:22-25m3/H(12 temperature zone);

3.When the oxygen concentration in the welding area is within 1000ppm, the nitrogen consumption is 10-12m³/H(12 temperature zone).

Practical significance of whole-process hypoxia concentration control

1.Inert protection shall be provided throughout the process to prevent secondary oxidation of the welding interface;Poor wetting caused by  oxidation will lead to more fatal hazards in the process of miniaturization and close spacing.

2.Increase the width of lead-free welding process window and make process commissioning  more flexible;In  nitrogen environment,the surface tension of  liquid solder decreases,which can effectively reduce the peak temperature and shorten the reflow time

Recovery System

Principle of staged recovery

1.Make use of the physical characteristics of the flux to scientifically recover the volatile organic matter of the flux.

                        Time-temperature profile

Recovery design of bottom exhaust port

1.Avoid the amount of flux drops caused  by the  accumulation of flux at the exhaust port.

Preheating module

Eficient heating capacity

At the same time,when welding components with large differences in size,the reflow  oven  equipment is required to maintain high thermal efficiency at low convection wind speed

High capacity

 High productivity, production chain speed up to 160cm/min:Low energy Consumption,new    thermal management system, effectively reducing costs;specializing in high-speed  production and high-precision PCB packaging  process.

Excellent temperature control ability

Strong temperature control ability,high  temperature control accuracy,and the temperature difference  between the setting and the actual temperature  is within  1.0℃; Temperature  fluctuation from unload to full load is within 1.5°℃;The temperature  difference between  adjacent temperature is within  100℃due to the super fast  temperature rise and fall capability

Fast thermal recovery capability

The precise PID temperature control and high heat specific capacity furnace cavity  structure design make  KT series have excellent  fast  thermal  compensation  capability   The furnace temperature fluctuation  of  KT  series fast  thermal  compensation  system is≤1.5℃under unload and full-load conditions.

Excellent cooling capacity

Multizone double-sided cooling

·It is applicable  to PCB products with large thermal capacity to ensure   low product outlet temperature.

Transportation   System

Transport control unit

Servo motion drive system,accurate speed and smooth  transportation

Comparison with traditional one-sided cooling profile

Guide rail width adjusting unit

1.Guide rail width adjustment drive adopts rigid shaft rotation to ensure the synchronization of front and rear width adjustment;

2.In the direction of rail transportation, 5 sets of synchronous screw are adopted to solve the problems of board jamming and falling in the furnaces

3.The adjustable and stabilized oil pump is used to solve the problem of uneven lubrication in the gravity oil cup.