Wu Tianming, deputy chief craftsman of Shanghai Steam Turbine Co., Ltd. visited the CIMT2007 for a few days and learned a lot of new product information. He told reporters, "One of the big gains for us at this exhibition is to see that Ha Yigong, Siping Xinggong, Jiaxing Hengfeng and other companies have made some breakthroughs in rotor wheel slot milling cutters. They all showed their belts. The V-shaped knife of the wave blade is expected to be tried in the future." At present, the steam turbine with a wave blade used by the Shanghai steam turbine in its largest rotor wheel groove Machining is provided by OSG. Wu Tianming said that the effect is very good.
"The semi-finished knives processed by the wheel groove were originally imported from Japan. Jiaxing Hengfeng has developed a milling cutter with a wave blade, a spiral groove and a front angle. Therefore, we are also preparing to purchase Realize the localization of small batches.†Wu Tianming believes that the capabilities of domestic tool manufacturers are constantly improving. In fact, due to its own production characteristics, steam turbine manufacturers are also introducing advanced tool grinding machines to create special tools, and their tool manufacturing capabilities are also improving.
“Foreign manufacturers are of course constantly introducing new tools. As I saw at the Isca booth, they introduced several new milling tools. According to the introduction, the efficiency is very high.†However, Wu Tianming also believes that “in fact, this is also There is a problem, so many new products are not necessarily suitable for our processing. Not all tools that can improve efficiency should be introduced immediately. For new high-efficiency tools, make some judgments based on actual conditions, such as the original tool. Normally in use and able to meet production needs, you may need to seriously consider the cost of replacing the tool, including a series of problems caused by changes in procedures, spare parts, etc. We are still cautious in these aspects."
“In short, during the exhibition, we did know a lot of corporate information and learned a lot of new products for later use.â€
In fact, for the steam turbine industry, with the increase of new products, as the pressure of steam turbines increases, the temperature increases, the material properties and hardness continue to increase, the processing difficulty increases, and new problems are raised for tool applications. In many respects, advanced tools that can adapt to new production requirements are needed. “For example, the one million kilowatt ultra-supercritical high-pressure inner cylinder we are currently manufacturing needs to process a 28mm groove, the hardness of the material being processed is as high as HRC52; at the same time, the cylinder will be inflated due to ultra-supercritical – this is subcritical, super There is no critical manufacturing process, which requires maintaining the concentricity of the groove, which also increases the processing difficulty in the structure." Wu Tianming said.
“Some large tool companies, such as our high-touch Seco, Iskar, etc., will propose some solutions for the turbine industry's wheel groove processing and blade processing.†However, Wu Tianming believes that steam turbines are not as large-scale as automobile production, so There are also fewer tool companies that have a comprehensive focus on this.
Speaking of the domestic machine tool industry, Wu Tianming believes that domestic enterprises are developing rapidly, and many companies have introduced new high-tech products during the exhibition. "But I think it is still a matter of concern for companies to make up their minds to buy domestically produced five-axis equipment. After all, as a new technology and new product, performance may be unstable." Wu Tianming said frankly. It is reported that the five-axis blade processing equipment that Shanghai Steam Turbine is preparing to introduce recently will still be imported. Domestic user companies do have such cases. After a large number of domestic high-end machine tools are purchased, faults often occur. "Domestic equipment does have absolute advantages in terms of price, but stability cannot be guaranteed, and the commissioning time of equipment will be very long. Of course, we should see that the development speed of domestic machine tools is already quite fast. After all, the development of high-end machine tools requires a process. We can't be too hasty."
"The semi-finished knives processed by the wheel groove were originally imported from Japan. Jiaxing Hengfeng has developed a milling cutter with a wave blade, a spiral groove and a front angle. Therefore, we are also preparing to purchase Realize the localization of small batches.†Wu Tianming believes that the capabilities of domestic tool manufacturers are constantly improving. In fact, due to its own production characteristics, steam turbine manufacturers are also introducing advanced tool grinding machines to create special tools, and their tool manufacturing capabilities are also improving.
“Foreign manufacturers are of course constantly introducing new tools. As I saw at the Isca booth, they introduced several new milling tools. According to the introduction, the efficiency is very high.†However, Wu Tianming also believes that “in fact, this is also There is a problem, so many new products are not necessarily suitable for our processing. Not all tools that can improve efficiency should be introduced immediately. For new high-efficiency tools, make some judgments based on actual conditions, such as the original tool. Normally in use and able to meet production needs, you may need to seriously consider the cost of replacing the tool, including a series of problems caused by changes in procedures, spare parts, etc. We are still cautious in these aspects."
“In short, during the exhibition, we did know a lot of corporate information and learned a lot of new products for later use.â€
In fact, for the steam turbine industry, with the increase of new products, as the pressure of steam turbines increases, the temperature increases, the material properties and hardness continue to increase, the processing difficulty increases, and new problems are raised for tool applications. In many respects, advanced tools that can adapt to new production requirements are needed. “For example, the one million kilowatt ultra-supercritical high-pressure inner cylinder we are currently manufacturing needs to process a 28mm groove, the hardness of the material being processed is as high as HRC52; at the same time, the cylinder will be inflated due to ultra-supercritical – this is subcritical, super There is no critical manufacturing process, which requires maintaining the concentricity of the groove, which also increases the processing difficulty in the structure." Wu Tianming said.
“Some large tool companies, such as our high-touch Seco, Iskar, etc., will propose some solutions for the turbine industry's wheel groove processing and blade processing.†However, Wu Tianming believes that steam turbines are not as large-scale as automobile production, so There are also fewer tool companies that have a comprehensive focus on this.
Speaking of the domestic machine tool industry, Wu Tianming believes that domestic enterprises are developing rapidly, and many companies have introduced new high-tech products during the exhibition. "But I think it is still a matter of concern for companies to make up their minds to buy domestically produced five-axis equipment. After all, as a new technology and new product, performance may be unstable." Wu Tianming said frankly. It is reported that the five-axis blade processing equipment that Shanghai Steam Turbine is preparing to introduce recently will still be imported. Domestic user companies do have such cases. After a large number of domestic high-end machine tools are purchased, faults often occur. "Domestic equipment does have absolute advantages in terms of price, but stability cannot be guaranteed, and the commissioning time of equipment will be very long. Of course, we should see that the development speed of domestic machine tools is already quite fast. After all, the development of high-end machine tools requires a process. We can't be too hasty."
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