News
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Zoomlion Customer Come To Factory For Glass Plate Induction Brazing Project
One customer from Zoomlion came to the factory to factory acceptance the induction soldering equipment. Zoomlion ,famous Chinese company Founded in 1992, it is the first A+H-share listed company in the industry, mainly engaged in the R&D and manufacturing of high-tech equipment such as constr...Read more -
500KW Induction Heating Machine Installation
Duolin after sales team have installed 500KW induction heating machine in customer factory. It is a company for sucker rod manufacture,customer needs to heat length 8 meters long bar,both ends will be heated.The 500KW machine can heat one piece up to forging high temperature in 6 seconds,fully a...Read more -
chain continous induction hardening and tempering machine
Chains are generally metal links or rings, which are mostly used for mechanical transmission and traction, and are used in all industries that use chain transmission. The industry is very wide, including food, electrical production, logistics, coating industry, electronics industry, military indu...Read more -
Long Bar Heat Treatment Machine
Two 18 meter production line for 6-45 mm long bar induction heat treatment machine finished the aging test and pack to the container today,two 40 GP. It is fully automatic by PLC,to control the induction heating machine output power,bar move speed and cooling water capacity.Customer can set pro...Read more -
60KW induction Billet Heater
Duolin is professional manufacture of induction heater in Chengdu China. Induction heating is widely used in hot forging,brazing,surface hardening and heat treatment.In Duolin factory,engineer used 60KW induction heating equipment to heat diameter 35 mm billet.The machine will send to customer af...Read more -
1250KW machine for Hot Forging
Billet heating for hot forging is the most common use for induction heating.Material can be carbon steel,aluminium,stainless steel and other ferrous and non ferrous steel. In Duolin Factory,1250KW induction heating equipment is under debugging,it used for diameter above 100mm bar heating to 1200 ...Read more -
Small Power Induction Heating Machine Manufacture
In Duolin factory,small power machine for Taiwan client,1000KW induction heating equipment for UAE’s client,1250KW induction hot forging machine for Russian client are under production.Read more -
Duolin will attend 17th Shanghai Forging EXPO
Founded in 2005,“China (Shanghai) International Forging Exhibition” has been held Sixteen times successfully, with exhibits will also include forgings, forged flanges, rings, forging materials, forging equipment and forging accessories, etc, and has become one of the most professional and author...Read more -
How to choose the frequency of induction heating machine
1. For hardening, hardening depth is deeper, the frequency of induction machine is lower; hardening depth is shallow, the frequency of induction machine is higher. Hardening depth: 0-1.5mm 40-50KHz (High frequency, Ultrasonic frequency machine) Hardening depth: 1.5-2mm 20-25KHz ...Read more -
Energy Consumption Comparison of Different Circuits Used in Medium Frequency (MF) Induction Heating System for forging
Written by Mr. Zeng xiaolin from CHENGDU DUOLIN ELECTRIC CO., LTD This article analyzes the disadvantages of current SCR MF Induction Heating System and introduces a new type of MF Induction Heating System for forging with IGBT power devices. It is Series Resonant Circuit with features of signifi...Read more -
Semiconductor and Technology Used in Our Machine
Semiconductor and Technology Used in Our Machine 1. Power Semiconductor Devices Used in Our Products ●MOSFET Characteristics: operating at high frequency, low switching losses and easy to drive ●IGBT(Insulated Gate Bipolar Transistor) Characteristics: much lower conducti...Read more -
Coil making principles
The heating effect of the workpiece not only depends on the power of the power supply, but also with the shape of the induction coil, the number of turns, the length of the copper tube, the workpiece material. Shape and other factors are directly related to the equipmen...Read more
