In order to prolong the service life of cutting tools, it is necessary to reasonably select the type of metalworking fluid and optimize the machining method, especially for difficult-to-cut materials. High-quality cutting fluid is needed when cutting difficult-to-cut materials, and the cost of this kind of cutting fluid is also expensive. However, in the cutting process, difficult-to-machining materials often have an adverse impact on the service life of the tool, so it is very necessary to choose a suitable cutting fluid to effectively prolong the service life of the tool and reduce the machining cost. The direct cause of tool damage is cutting force and cutting heat, so no matter which machining method is adopted, its fundamental purpose is to minimize the temperature of the cutting tip and the machined area of the parts. prevent the surface hardening of the machined parts and the tool tip temperature from being too high, increase the heat dissipation area and control the cutting force.

Solution:

1. Proper control of cutting force and cutting speed.

Properly controlling the cutting force and cutting speed of the tool is also one of the most effective means to reduce the temperature of the machining area and prolong the service life of the cutting fluid. When machining difficult-to-machining materials, the fine grinding tool edge is generally used, and the cutting depth and width should not be too large. When selecting the cutting line speed, it should be considered according to different material types, part structure, processing equipment and other factors. In general, if the processing material is nickel-based alloy, the linear speed should be controlled at 20 to 50 meters per minute; the processing material is titanium alloy, the linear speed should be controlled at 30 to 110m per minute; the processing material is PH stainless steel, and the linear speed should be controlled within 50 to 120m per minute.

2. Choose a reasonable cutting method.

For difficult-to-machining materials, there is a great difference in the damage of cutting fluid by choosing different cutting methods. No matter which cutting method is chosen, the principle is the same, that is to reduce the cutting force and the temperature of the cutting area as much as possible. The cycloid cutting method can minimize the cutting area and minimize the actual cutting angle of the cutting fluid, thus prolonging the heat dissipation time of each tooth of the tool and reducing the cutting temperature. the spiral interpolation method can make the cutting amount of each tooth relatively uniform and avoid the cutting force concentrated on a few teeth to accelerate wear, especially at the corner. On the other hand, the large feed cutting method is adopted to effectively reduce the cutting force with smaller cutting depth and larger feed, so that the minimum cutting heat is produced and the temperature in the machining area is the lowest.

3. Ensure timely and effective chip breaking.

In metal processing, a large amount of cutting heat is generally generated on the cutting chip. If the chip length can be controlled to ensure timely and effective chip breaking, this part of the cutting heat can be taken away by the chip, so chip breaking is an effective way to control the cutting temperature. When machining difficult materials, especially in the rough machining process, under the premise of the rigidity of the machining system, chip breaking should be produced as far as possible in the whole machining process. At the same time, the cutting fluid with good settling performance is used to settle and discharge the cutting chips so as not to let the cutting chips rub against the surface of the machined workpiece. SCC730ASCC730A water-based environmental protection cutting fluid is made of special high-performance extreme pressure additive, antirust agent and other additives, which is a high-performance multi-purpose cutting / grinding fluid. When mixed with water, a stable transparent solution can be formed. This product has good sedimentation, extreme pressure lubricity, rust prevention, cooling and cleaning. It has strong anti-microbial decomposition ability, and its stability can be maintained under different water hardness conditions. The service life is more than 5 times that of ordinary emulsified oil.