15kW Induction Heater Forge Furnace

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Notes and translated Chinese manuals

Introduction

These are a lot of fun. You can, braze tools and HVAC tubing with them, melt metals for sand-castingmall parts, and temper or forge various metals.
They run off a 50A 230VAC stove outlet (not great on a 30A dryer outlet) and require water cooling even for light-duty use.
These are not quite straight-forward to set up and use, so I will post additional information here as I have time.

User manuals

In the mean time, here is the original translated user-manual which came with my unit: LINK

Q&A

Q: How much does an excellent 15kW unit cost in 2024?
A: Only $630USD aka $875CAD with shipping included!
You can pay more but you will NOT get better in this style.
The two companies below have been making them for years!

Q: Do I really need a 50A 230VAC stove outlet to run the unit?
A: Yes because a 30A dryer outlet will not handle the reactive power.
These units have a built-in 60A breaker (no power factor correction).
Therefore do not entertain buying a 115VAC unit in the 15kW variety!

Q: Can I use antifreeze in my unit to protect it from winter freezing?
A: Pure propylene glycol cattle-feed supplement without any additives.
Dilute it with water and NEVER EVER use automotive antifreeze which
will destroy the electronics because it contains conductive stabilizers!

Q: What kind of water reservoir can I use with the chiller?
A: Red plastic HDPE gassoline can with vent cap on opposite side.
These are sturdy and the vent cap prevents pressure buildup.

Q: What kind of heat exchanger do I need for water cooling at each water outlet?
A: You need two separate cooling circuits comprising a heat exchanger and fan.
Salvage the condensers off an old air conditioning unit, or use an automotive oil-cooler.
These provide just enough back-pressure to help balance the outlet water flow.
Never put the cooler on the water inlet side since that provide no back pressure,
and you will ruin your pump which is usually not rated for very hot water.

Q: Why do I need two water cooling circuits?
A: The internal IGBT's and ferrites are on a separate water circuit from the external copper inductor coil.
This is because water in the coil can boil, thereby creating a vapor-block which would affect both circuits.
Therefore the water outlets have to be run separately to separate heat exchangers to mitigate any steam.

Q: What kind of water circulation pump do I need?
A: The only sensible solution is a diaphragm based water pressure boosting pump.
These are rated for a specific flow rate AND can provide the requisite pressure.
Do not be dumb like other people who buy unsuitable impeller based pumps.
Search for the famous Seaflo brand and many similar pumps will come up.
Absolute bare minimum 1.8GPM aka 6.8LPM flow at 45PSI aka 3.1Bar.
Diaphragm pumps also simplify your water circuit since they are self priming.

Q: Why does my unit have 3 water outlets instead of 2 water outlets?
A: Because you bought a unit which was designed by ignoramuses.
Every decent 15kW unit has exactly 1 inlet and exactly 2 outlets.

Q: What sort of water filter do I need?
A: Agricultural venturi-sprayer filter with fine stainless steel mesh is best.
Put on suction hose end and fit through the neck of a plastic gasoline tote.
Make sure you use pure non-conductive de-ionized or distilled water!

This is the exact model which I purchased
           From the manufacturer:

Product page: https://www.haidewe.com/gpgyjrsb/296.html
海德维科技 (Heatwell Technology)
东莞市海德维科技有限公司 (Dongguan heatwell technology Co., LTD)
深圳市海德维科技有限公司 (Shenzhen heatwell technology Co., LTD)

HDW-15A（15KW）高频感应加热设备
High frequency induction heating equipment


发布日期：2017-06-20
Release date: 2017-06-20

主要技术参数:
1、输入功率: 15KW
2、输入电压: 单相220V, 50或60Hz
3、工作电压范围：180-250V
4、振荡频率: 30—100KHz
5、输出电流：200-600A
6、时间设置：带计时功能1-99s
7、水温保护点：40℃
8、冷却水要求：0.06MPa—0.12MPa 7.5 L/min
9、体积: 550×220×470mm 重量：25Kg

Main technical parameters:
1. Input power: 15KW
2. Input voltage: single-phase 220V, 50 or 60Hz
3. Working voltage range: 180-250V
4. Oscillation frequency: 30-100KHz
5. Output current: 200-600A
6. Time setting: with timing function 1-99s
7. Water temperature protection point: 40℃
8. Cooling water requirements: 0.06MPa-0.12MPa 7.5 L/min
9. Volume: 550×220×470mm Weight: 25Kg

主要特点:
• 采用串联谐振电路，谐振后通过高频变压器输出低电压、大电流的高频电源；高频感应加热机为我公司最新一代产品，采用MOSFET功率器件和我公司最新一代变流控制技术，设备结构非常简单，可靠性高，维修率低，客户自行维护方便，是目前应用最为广泛的设备之一。
• 该系列设备结构最简单、可靠性最高、维修率最低、价格也最低，是目前普及性最好的设备，已成为工厂的必备工具。
• 该系列设备具有加热时间、保温时间和冷却时间分别独立可调，可在一定程度上有效地控制加热曲线和加热温度；高频感应加热机应用于重复性高的工件加热和快速加热；应用于钎焊中时，采用快速加热和保温功能相结合，既实现快速加热，同时又可在钎料熔化时进行保温，使焊料充分铺展；

Main features:
• A series resonant circuit is used, and after resonance, a low-voltage, high-current high-frequency power supply is output through a high-frequency transformer; the high-frequency induction heating machine is the latest generation product of our company, using MOSFET power devices and our company's latest generation inverter control technology, equipment structure It is very simple, has high reliability, low maintenance rate and is easy for customers to maintain themselves. It is one of the most widely used equipment at present.
• This series of equipment has the simplest structure, the highest reliability, the lowest maintenance rate, and the lowest price. It is currently the most popular equipment and has become an essential tool in factories.
• This series of equipment has independently adjustable heating time, holding time and cooling time, which can effectively control the heating curve and heating temperature to a certain extent; The high-frequency induction heating machine is used for highly repeatable workpiece heating and rapid heating; During brazing, the combination of rapid heating and heat preservation functions is used to achieve rapid heating and at the same time maintain heat while the solder is melting, so that the solder can fully spread.

应用范围:
• 刀具钎焊
• 金刚石工具钎焊
• 小零件热处理
• 贵金属如金、银等少量熔炼

Application scope:
• Tool brazing
• Diamond tool brazing
• Heat treatment of small parts
• Precious metals such as gold and silver are smelted in small quantities


This unit looks similar to the one I purchased.
           From the manufacturer:

Product page: http://www.inductionchina.com/product/productshow.546.html



东莞市金犇崃机电设备有限公司 (Dongguan Jinbenlai Electromechanical Device Co., Ltd)
有限公司金莱机电(香港) 有限公司 (Jinlai Electromechanical(HK) Co.,Limited)

JL-15（15KW）高频感应加热设备
JL-15 (15KW) High frequency induction heating equipment



Main Feature:
• It adopts the most advanced MOS, IGBT frequency conversion control technologies to realize automatic tracking of frequency.
• It has the constant current and power control function, which can significantly optimize metal heating process, realize the high efficiency and fast heating and bring into play the superior performance of the products.
• About ten types fault protection and display of over-current, over-voltage, water shortage and phase missing can provide higher reliability and durability.
• It is safe and reliable, and requires no equipments of ten thousand voltage, and thus can ensure the safe operation.
• It is available for infrared temperature measurement, which can realize the automatic control of temperature, improve the heating performance and simplify the manual operation.

Technical Parameters:
Model JL-15
Input power desire Single phase 220V  50/60HZ
Max oscillate power 15KW
Max Input Power 7KW
Max input current 36A
Oscillate frequency 30-100KHZ
Cooling water desire >0.2MPa  2-6L/Min
Duty cycle 100% 40°C
Dimensions(L*W*H) 500*210*460mm
Net weight 21kg
Cable length 2-6(Meters)
 

List of Accessories In The Package:
Item Name of machine or parts Specification  Amount
1 JL-15 Induction Heater - 1 pc
2 Foot pedal  3 core 1 pc
3 Induction Coils - 2 sets
4 Instruction Manual - 1 pc
5 Product catalog - 2 sets


Safety, accuracy and completeness of information provided herein is not guaranteed,
so be inspired by it but do not use it as a basis for experimentation or other actions.
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