SYOGM Gold Melting Furnace Instruction

PRECAUTIONS

Use Environment

When using a furnace, it is recommended to use it in a well-ventilated, safe, and open environment. For safety reasons, please ensure that there are no flammable or explosive materials around to avoid accidents (such as fires) that may cause personal injury or property damage.
If conditions permit, it is recommended to equip fire extinguishers when using the furnace.
It is strictly forbidden to use the furnace in rain, snow, wet weather, and environments, and it is forbidden to use this product in wet environments.

Images:

Top Left Image:
- A green checkmark next to an electrical outlet symbol.
- A red "X" next to an illustration of a person sitting near a furnace with various items around, indicating improper use.
Bottom Left Image:
- A green checkmark next to a fire extinguisher with the label "≤2M," indicating that the fire extinguisher should be within 2 meters.
Bottom Right Image:
- A red circle with a diagonal line through it, crossed over an icon of water droplets, indicating that the product should not be used in wet environments.

(4). When using the furnace, unrelated personnel are not allowed to approach. If there are children or pets, please ensure that they are used safely.

Precautions for Protection

When using the furnace, it is necessary to wear high-temperature protective equipment (such as high-temperature gloves, protective eyes). If conditions permit, it is recommended to wear safety helmets, labor protection shoes, insulation suits, high-temperature masks, etc.

Images:

Top Images:
- Two red circles with diagonal lines through them:
- Left: A house icon, indicating "No buildings" or "Keep away from structures."
- Right: A dog icon, indicating "No pets."
Middle Image:
- A green checkmark next to an illustration of a person wearing protective gear, including a helmet, gloves, and apron.
Bottom Image:
- A red circle with a diagonal line through it, crossed over a flame icon, indicating "No fire" or "Avoid fire hazards."

Please confirm whether the voltage meets the product voltage requirements before use. And ground wiring is needed.

Image:

A diagram showing an electrical outlet and a plug.

It is forbidden to use the crucible in full capacity. Do not exceed 70% of the maximum capacity. Please refer to the chapter Molten metal

Image:

A circle with "70%" written inside it.

(5) If the equipment is new or has not been used for a long time, please preheat the equipment and graphite crucible before use. Put the graphite crucible into the equipment, and set the preheating temperature to 300-500 °C when powered on. After the temperature rises to the set temperature, continue preheating for 3-5 minutes. Then turn off the power and wait for 8-10 minutes before placing the material to be melted into the graphite crucible. For safety reasons, please wear high-temperature protective equipment during operation.

如果是新的设备或设备闲置长时间未使用，在使用前请先预热设备和石墨坩埚，将石墨坩埚放入设备里面，通电状态下，将预热温度设置在300-500°C，温度上升到设置好的温度后，持续预热3-5分钟，然后关闭电源等待8-10分钟后将需要熔炼的材质放入石墨坩埚中，为了安全，操作过程中请佩戴高温防护装备。

Images:

Left Image:
- A label that says "TEMPERATURE" with a hand pointing to a plus sign, indicating temperature adjustment.
Right Image:
- A green checkmark next to an illustration of a block being placed into a container, indicating proper placement.

(7). It is forbidden to add anything to the molten metal to prevent splashing, so as to avoid personal injury or fire.

禁止在熔融的金属中添加任何东西，防止飞溅，以免造成人身伤害或火灾。

(8). It is forbidden to stir during the melting process, otherwise it will cause metal splash, which will lead to burns and scalds. Always remember to wear PPE.

在熔化过程中禁止搅拌，否则会引起金属飞溅，导致烧伤和烫伤。永远记得穿个人防护装备。

Images:

Top Left Image:
- A red circle with a diagonal line through it, crossed over an icon of a hand stirring, indicating "No stirring."
Top Right Image:
- A red circle with a diagonal line through it, crossed over an icon of a container being stirred, indicating "No stirring."

(9). It is forbidden to contact the machine with water during use to avoid personal injury or property damage caused by fire.

使用过程中严禁与水接触，避免火灾造成人身伤害或财产损失.

Image:

A red circle with a diagonal line through it, crossed over an icon of water droplets, indicating "No water."

(10). It is forbidden to melt acidic and alkaline substances to avoid personal injury or fire. At high temperatures, the large amount of gas these materials can cause the molten metal to splatter.

禁止熔化酸性和碱性物质，以避免人身伤害或火灾。在高温下，这些材料的大量气体会导致熔融的金属飞溅.

Images:

Left Image:
- A red "X" next to the word "Alkaline," with an illustration of blocks representing alkaline substances.
Right Image:
- A red "X" next to the word "Acid," with an illustration of blocks representing acid substances.

1.4 Precautions for Maintenance (维护注意事项)

(1). After using the furnace, it is prohibited to quickly cool the furnace and graphite crucible to avoid equipment damage. Please cool naturally at room temperature.

Image:

A red "X" next to a symbol indicating rapid cooling (a thermometer with a downward arrow).

(2). If you need to replace the product accessories, please use the original manufacturer’s accessories.

(3). Do not modify furnace structure and accessories without authorization.

Image:

A red circle with a diagonal line through it, crossed over an icon of a cube being modified, indicating "No modification."

(4). After continuous use of the device for 3 hours, it is recommended to disconnect the power supply, cool it naturally to room temperature, and then reconnect the power supply to continue using it. (5). When cleaning the machine, disconnect the power supply first and wait till the machine has cooled off. Then wipe it with a clean dry cloth. Do not allow any liquid to enter the machine.

2. MACHINE STRUCTURE

Diagram of the Machine:

Furnace lid (炉盖): The top cover of the furnace.
Furnace body (net cover) (炉体(网盖)): The main body of the furnace, covered with a net.
Control box (操纵台): The control panel for operating the machine.
PID Thermostat (PID温控表): A device used to regulate temperature using PID control.
Power switch (电源开关): The switch to turn the power on or off.

Additional Components:

Temperature sensor (温度传感器): A sensor used to measure temperature.
Exhaust port (排气口): An opening for exhaust ventilation.
Ceramic insulation cotton (陶瓷隔热棉): Ceramic material used for thermal insulation.

3. WORKING PRINCIPLE

3.1. The machine can be divided into: heating system, control system.

Furnace principle: The controller heats the furnace through the resistance wire. The heat in the furnace is transferred to the crucible, and then the crucible transfers the heat to the metal, and the metal generates heat until it reaches the melting point of the metal.

3.2. Control system: PID system. PID system has two functions: measure and control temperature.

3.3. Principle: The system will periodically measure the temperature in the furnace intermittently, and transmit the measured temperature to the PID system, and then the PID system will display the obtained value (actual temperature) on the temperature control table.

3.4. If the actual temperature is less than the setting temperature, the PID system will heat the furnace through the resistance wire; if the actual temperature is greater than the setting temperature, the PID system will stop heating the furnace. Intermittent temperature measurement is generally 2s as a time period to ensure the accuracy of temperature measurement. Compared with ordinary temperature control systems, the PID system has obvious advantages: flexibility, efficiency, and accuracy.

4. PRODUCT PARAMETERS

产品参数

| Mode (型号) | YR-BZ-RJL | YR-ST-RJL | |-------------|-----------|-----------| | Power (功率) | 2000W | | | Voltage (电压) | 110V/220V | | | Max Temperature (最高温度) | 1150°C | | | Temperature Error (温度误差) | ±10°C | | | Working Environment Temperature (工作环境温度) | 0~50°C, 30~85%RH | | | Molten Gold Amount (熔金量) | 1KG/2KG/3KG | | | Melting Material (熔炼材质) | Au(金) Ag(银) Cu(铜) Al(铝) | | | Product Color (产品颜色) | Red (红色) Black (黑色) | | | Product Size (L*W*H) cm (产品尺寸) | 21*23*38cm | 34*25*40cm | | Product Weight (产品重量) | 8.5KG | 10KG |

5. MOLTEN METAL

The maximum temperature of our machine is 1150°C. Melting points of common metals with melting points lower than 1150°C: (Our machine’s maximum usable temperature is 1150°C. Common metals with melting points below 1150°C are as follows:)

| Metal Name (金属名称) | Melting Point (熔点) | Maximum Capacity (最大生产能力) | |-----------------------|----------------------|-----------------------------------| | | | 1KG Crucible (1kg坩埚) | | | | 2KG Crucible (2kg坩埚) | | | | 3KG Crucible (3kg坩埚) | | Copper (铜) | 1083.4°C | 1.16KG | 1.90KG | 2.63KG | | Aluminum (铝) | 660°C | 0.35KG | 0.58KG | 0.78KG | | Gold (金) | 1064.18°C | 2.5KG | 4.11KG | 5.67KG | | Silver (银) | 961.78°C | 1.36KG | 2.24KG | 3.09KG |

In order to achieve the ideal melting effect, please do not fully fill the crucible. When there is too much metal in the crucible, it takes a long time to melt the metal and waste heat. In addition, in the metal melting furnace, the impurities in the metal will decompose to produce gas. If the crucible is loaded too much, it will cause excessive pressure. It will be dangerous to users. In this case, you need to open the lid to melt.

6. OPERATION STEPS

6.1. Insert the power cord, check if the equipment appearance is intact and if the relevant accessories are complete.

6.2. Check if the high-temperature protective equipment is ready.

6.3. Place the material to be melted into a graphite crucible, and note that after the melted material is completely melted, the capacity of the melted material in the graphite crucible shall not exceed 70% of the capacity of the graphite crucible.

6.4. Place the graphite crucible containing the material to be melted into the equipment.

6.5. Turn on the power of the machine.

6.6. The temperature setting operation is as shown in the figure.

温度设定操作如图所示。

6.8. Please set the temperature to 300-500°C for 3-5 minutes to preheat the machine and crucible first.

6.9. After preheating, set the temperature to the melting temperature and wait for the metal to melt.

Image:

A control panel with a digital display showing the temperature.
A red furnace unit.

6.9. After the metal is melted, use a torch to preheat the graphite mold for 1-2 minutes as shown in the figure below.

6.10. After the graphite mold is preheated, use the crucible tongs to hold the crucible and pour the liquid metal into the graphite mold.

Images:

A torch being used to preheat the graphite mold.
Liquid metal being poured into the graphite mold using crucible tongs.

6.11. After finishing, turn off the power.

6.12. After just using the equipment, there is still a high temperature. Please cut off the power and naturally cool it to room temperature. Do not move the furnace without proper cooling, otherwise it may cause internal damage to the equipment.

7. PROBLEM SOLUTION

7.1. Q: Followed the operation steps, but the machine is still not working.

A: If you have checked all the steps and the machine still cannot work or melt the metal, please contact customer service.

7.2. Q: How to replace the temperature sensor.

A: Refer to the following steps
1. Remove the bottom screw.
2. Remove the old temperature sensor and loosen the wiring harness on the old temperature sensor.
3. Install a new temperature sensor, secure it with screws, and re-secure the wiring harness of the temperature sensor.
4. Tighten the bottom plate screws. ---

Images:

A close-up of a temperature sensor being removed.
Two images showing the internal wiring and connections for the temperature sensor.

7.3. Q: The lid cannot be closed properly, and the graphite crucible cannot be properly placed when tilted inside the equipment?

A: Due to improper assembly of the temperature sensor, interference occurred between the graphite crucible and the temperature sensor. Please follow the steps in 7.2Q to reinstall the temperature sensor.

7.4. Q: How to change the temperature controller of the machine?

A: 1. Press and hold the buckle at the bottom of the controller band, pull it out.
2. Insert the new controller and press firmly.

Images:

Two images showing the temperature controller being removed and replaced.

7.5. Q: The temperature did not continue to rise after the device was powered on?

A: 1. If the equipment is working well and the temperature of the graphite crucible continues to rise, it indicates that the temperature sensor is damaged and needs to be replaced.
2. If the temperature does not continue to rise and there is no sign of an increase in the temperature of the graphite crucible, it indicates that the equipment has malfunctioned.

6. Q: After a few uses, the paint on the outer wall peels off.

A: It is normal for the paint to fall off after being used several times under high temperature conditions, and it does not affect the use.

7.7. Q: When the machine is turned on, it cannot be heated. The machine controller shows the temperature, but the temperature cannot rise, and the machine doesn’t heat up at all.

A: Please use a resistance measuring instrument to test the resistance of the resistance wire.
1. If the resistance value is infinite, it means that the resistance wire is blown, and the resistance wire needs to be replaced.
2. If you have checked the resistance wire and there is no abnormality, but the machine still cannot heat up or melt the metal, please contact customer service.

7.8. Q: As soon as the machine was powered on, it caused the circuit to trip.

A: 1. Check whether the resistance wire is in contact with the hardware parts of the furnace body to cause a short circuit. (Please refer to 7.7 Q)
2. Check whether there is a short circuit in the control box.
3. Check to see if the controller PID control board is in place.

7.9. Q: After using it once or twice, the inner pot ceramic has cracks.

A: The temperature of the machine rises or drops rapidly in a short period of time, which will cause cracks in the ceramics of the inner pot. This does not affect the use of the machine and can continue to be used.

7.10. Q: The crucible cannot be put into the machine and is stuck in the hole.

A: Use sandpaper to polish the outer wall of graphite. Or please contact customer service.

7.11. Q: How to replace the resistance wire.

A: More details to see the page video information or please contact customer service.

8. FAQs

8.1. Q: Which voltages are applicable?

A: There are two types of voltages for our products: 1. AC 110V-120V/60Hz, 2. AC 220V-240V/50Hz. In addition, we provide American, Australian, British, Japanese, and Australian plugs. If you need it, you can contact us by email.

8.2. Q: What is the maximum melting temperature of the furnace? Can it melt iron?

A: The furnace can reach up to 150°C (210°F). Since the melting point of iron is 1538°C (2800°F), it cannot melt iron. It can only melt metals below 1150°C.

8.3. Q: Does it give off an unpleasant smell when melting metal?

A: There is a certain smell when melting metal; this is normal.

8.4. Q: Can I melt lead?

A: Yes, it needs to be in a ventilated outdoor environment, and the cover needs to be opened during operation of the machine to avoid gas poisoning.

8.5. Q: How long does it take to heat/melt?

A: About 30-50 minutes.

8.6. Q: Do I need to preheat the crucible?

A: Preheating is necessary. Preheating the crucible can prolong the service life of the crucible. Before each crucible is used, it needs to be preheated at 300-500°C for 3-5 minutes. (Refer to P11 for preheating steps 6.7)

8.7. Q: How to preheat graphite molds?

A: Preheat the graphite mold and use a flame injector to burn for 3-5 minutes. Please refer to preheating step 6.9 on page 11.

8.8. Q: Can the crucible be used all the time? Why is there a layer of black powder on the surface of the crucible?

A: Crucibles are consumables. The service life of the crucible is 7-15 times. The crucible is made of 99% graphite, and the graphite will become desetified at high temperature, which is a normal phenomenon.

8.9. Q: How much metal can the crucible melt at most? What is the melting point of different metals?

A: Refer to the table (Above maximum capacity refers to the molten (liquid) metal. Recommended capacity in operation: 70% of Max capacity. It is forbidden to use a full-loaded crucible, up to 70% of the maximum.)

Table: Maximum Capacity of Different Metals

| Metal Name (金属名称) | Melting Point (熔点) | Maximum Capacity (最大生产能力) | |------------------------|----------------------|----------------------------------| | Copper (铜) | 1083.4°C | 1KG Crucible (1kg坩埚): 1.16KG 2KG Crucible (2kg坩埚): 1.90KG 3KG Crucible (3kg坩埚): 2.63KG | | Aluminum (铝) | 660°C | 1KG Crucible (1kg坩埚): 0.35KG 2KG Crucible (2kg坩埚): 0.58KG 3KG Crucible (3kg坩埚): 0.78KG | | Gold (金) | 1064.18°C | 1KG Crucible (1kg坩埚): 2.5KG 2KG Crucible (2kg坩埚): 4.11KG 3KG Crucible (3kg坩埚): 5.67KG | | Silver (银) | 961.78°C | 1KG Crucible (1kg坩埚): 1.36KG 2KG Crucible (2kg坩埚): 2.24KG 3KG Crucible (3kg坩埚): 3.09KG |

8.10. Q: I just melted a metal material with a crucible, can I continue to use the same crucible to melt other metal materials?

A: In order to ensure the purity of the molten metal, it is not recommended to continuously use the same crucible to melt multiple metal materials.
8.10. 问：我刚用坩埚熔化了一种金属材料，我可以继续使用它吗？坩埚可以熔融其他金属材料吗？
A: 为了保证熔融金属的纯度，不建议使用同一坩埚来熔化多种金属材料。

8.11. Q: Can you open the lid and add solid material to the graphite crucible during the process of melting the material to be melted into a liquid state?

A: This is very dangerous, as uneven heating can easily lead to the splashing of high-temperature liquid materials.

9. DISCLAIMER

9.1. Wear high-temperature protective equipment when using this product to prevent splashing damage of metal solution during product use.

9.2. The pictures of this product are all taken in kind. Due to the influence of light and angle during the shooting process, including the color difference of the resolution of the display, the products of distribution channels in different regions will be slightly different, and the products displayed in the mall shall prevail.

9.3. The manufacturer’s packaging pattern will be changed without notice, and the pictures in the mall will be updated as much as possible to ensure the latest product types.

9.4. During the use of this product, the surface of the product will have a high temperature of up to 400-500 degrees Celsius. Part of the surface paint will peel off at high temperatures. The paint will produce some gas at high temperature. Our products are certified by CPSIA.

9.5. This product belongs to high-temperature melting equipment, which is professional and dangerous. In view of the injury incidents caused by improper operation of users in the industry, we recommend that you purchase appropriate accident insurance and third-party liability insurance for yourself or users.

9.6. The internal circuit of this product, the competition of components is disassembled without permission, and the replacement of non-company components, resulting in product damage, the company is not responsible for burning out.

9.7. For all products sold, this site first requires that on the premise of strict use of assembly and necessary model technology, we are only responsible for the after-sales of the product (the purchased product itself) (when repaired or replaced). The manufacturer confirms that it is The company is not responsible for any quality problems, any other loss or damage.

9.8. Necessary molten metal knowledge and advice from others. We strongly recommend.

9.8. All buyers must learn some basic knowledge of installation and commissioning molten metal using machines, and then make and operate under the personal guidance of experienced hobbyists.

9.9. When choosing a melting site, it must be an open, flat, and safe site. Special care should be taken to stay away from and avoid areas with many people, traffic, buildings, public facilities, and animals. The radius exceeds 10M. Such as: various buildings, high-voltage lines, water conservancy projects, roads, and bridges, etc. It is also necessary to avoid various weather and climate disasters, such as rainy days, heavy fog, strong winds, etc., that are not suitable for the weather. Any personal behavior that violates the regulations, the company does not assume any responsibility.

9.10. The product is just a legal melting metal device. Without the written consent of the manufacturer and sales agent, no one may use the sample product for other commercial channels. Do not use it for political, religious, military, or other special and illegal purposes.

9.11. As a product of molten metal, the design, manufacture, and sale of the manufacturer do not imply any propaganda meaning of politics, military, religion, country, race, or skin color. What manufacturers can do is to respect scientific, historical rules as much as possible. The purpose of the manufacturer is for the peace of mankind.