Look! The Power Save Master wire saw machine in the video is currently performing the undercutting work on granite. Its cutting efficiency reaches 12.3 square meters per hour, while the cutting efficiency of an ordinary wire saw machine on granite is usually only 8 - 10 square meters per hour. Why can the Power Save Master wire saw machine have such a much higher cutting efficiency? That's because it is a permanent magnet synchronous wire saw machine.

Hello, everyone. I'm Oliver Mo, who manufactures and sells wire saws. In this video, we'll solve a problem, that is, what are the differences between the permanent magnet synchronous wire saw machine (hereinafter referred to as the Power Save Master) and the conventional three - phase asynchronous wire saw machine (referred to as the conventional model), and which one is more suitable for you when making a purchase. This video may be a bit long because it involves some technical descriptions. I'll try my best to express them in plain language.

Here I'll directly give the summary. Compared with the conventional model, the Power Save Master has the following outstanding advantages: greater power, faster cutting, remarkable power - saving, and more stable quality. Next, let's analyze these characteristics one by one.

Greater power

The motor has a large and constant torque. The motor torque remains unchanged at any speed. It also has excellent low - speed characteristics. Under the same current condition, it can provide a larger starting torque, making the start easier, smoother, and more stable. Especially when starting the saw, it can pull the Diamond Wire Saw by itself without manual assistance.

Faster cutting

Since it has greater power, it cuts faster. This may seem like a redundant statement, but it's not. Once a customer asked me that he used a 22 - kw wire saw machine for cutting reinforced concrete to dress granite. The wire saw machine could reach a relatively high speed, and the linear speed of the wire was also fast. However, after an hour of cutting, he felt that not much stone was cut. He asked me what was going on. I told him that the motor of the wire saw machine for cutting reinforced concrete has 2 poles and a small power of only 22 kw, so the power is small. Due to the small power, although you see the wire being pulled to cut rapidly, in fact, the wire doesn't cut into the stone but just slides quickly over the stone surface. This is what wire saw machine operators often call slipping. Remember in the previous video, we introduced the marble wire saw machine and the granite wire saw machine. The motor of the marble wire saw machine has 6 poles, and that of the granite wire saw machine has 8 poles, which are far more than that of the concrete wire saw machine. And the motor of the Power Save Master wire saw machine we're talking about here has 12 poles. So it has greater power and higher cutting efficiency!

Remarkable power - saving

The Power Save Master uses a permanent magnet synchronous motor, which means the motor has its own magnetism and magnetic field. While the conventional wire saw machine has no magnetic field and needs a part of the current to establish a magnetic field. This was introduced in high - school physics classes. Recall Ampere's law, also known as the right - hand screw rule, which shows the relationship between the current and the direction of the magnetic induction lines of the magnetic field excited by the current. Hold the energized solenoid with your right hand, and let your four fingers point in the direction of the current. Then the end pointed to by your thumb is the N - pole of the energized solenoid. Have you forgotten? It doesn't matter. You can understand it like this. When we supply 100A of current to the conventional wire saw machine, it needs to allocate 20A to establish the magnetic field and then uses the remaining 80A to do the work. While the Power Save Master, because it has its own magnetic field, only needs 80A, and it can use all 80A to do the work. To do the same work, it saves 20A of current compared with the conventional model, so the Power Save Master saves a lot of power. It may be a bit confusing. If you don't understand, you may need to listen to it a second time.

More stable quality

The permanent magnet motor of the Power Save Master has a high power factor of up to over 0.98. The motor rotor doesn't need excitation current, and the no - load current is basically 0. The motor temperature rise is very low, and the heat consumption is small. So it saves a lot of power and has a low failure rate. For two machines with the same power of 55 kw, after the Power Save Master wire saw machine has worked for 8 hours, when we touch the motor with our hands, we can only feel a slight temperature. While for the conventional wire saw machine, after working for 8 hours, it is strictly forbidden to touch the motor directly with hands because it is easy to get burned! Remember this.

Which to choose?

Finally, a question: which wire saw machine should you choose? In terms of function and energy - saving, the Power Save Master is definitely the first choice. However, in terms of price, the Power Save Master with the same power is more than ten thousand yuan more expensive than the conventional model. If you are going to quarry stones in the long term, the Power Save Master wire saw machine is your best choice. Because after about one year of use, the value generated by the saved electricity and the extra - cut stones will exceed the price of the machine itself. It's like getting a wire saw machine for free after one year. If you are dealing with a stone removal project and only need to use the wire saw machine for a short time, to save costs, you can consider the conventional wire saw machine. Have I made it clear?

Finally, I'm Oliver Mo, who manufactures and sells wire saws. I hope to be your partner on the stone quarrying journey. See you in the next video.