It is understood that in this major localized equipment with completely independent intellectual property rights, Wuzhong Machine Tool Group has achieved three major technological breakthroughs: First, the design of super heavy-duty high-precision static pressure headstock is the highest in the world today. Second, the research on the new technology of ultra-long bed manufacturing technology has reached the domestic leading design level. The third is the first domestic three-group three-channel CNC technology and three-axis synchronization technology.
At present, China's super heavy-duty rolls, large-scale ships (aircraft carriers) rudder shafts, supercritical turbine rotors, hydro-generator rotors and large motor spindle processing equipment are all imported, the country not only needs to spend a lot of foreign exchange, the technical blockade in developed countries is also China's national defense security and industrial security pose a threat, and the DL250 5-meter CNC super-heavy horizontal boring lathe fills this domestic gap.
Since the DL250 machine was put into use, it has been mainly used for the processing of key components of nuclear power products. It has successfully completed the full-order processing of super-critical nuclear power semi-speed rotor super-heavy and heavy-duty key components, and the users have reported good conditions. The successful development and putting into use of this equipment has broken the restrictions and blockades of western developed countries on China's similar high-end machine tool products. It has important strategic significance for improving the level of China's national equipment manufacturing industry and strengthening China's national defense security and industrial safety.
The DL250 5-meter CNC super-heavy horizontal boring lathe is a new product independently developed and manufactured by Wuzhong Group. It is the world's largest ultra-heavy-duty CNC horizontal lathe, which can be widely used in hydropower, nuclear power, shipbuilding, aerospace and other industries. The total weight of the machine tool is 1,450 tons, of which the headstock weight is 177 tons, the spindle end face jump and radial runout are within 0.008 mm, and the precision reserve can reach 20%. The maximum turning diameter is 5 meters, the maximum processing diameter of the tool holder is 4.5 meters, the maximum processing length is 20 meters, the maximum pupil diameter is 3.5 meters, the pupil depth is up to 8 meters, and the maximum load is 500 tons. In addition to the basic functions of a heavy-duty horizontal lathe, the equipment can also perform CNC machining of tapered surfaces, curved surfaces, stepped shafts, grooves and threads. With different accessories, it can be used for milling, grinding, boring and cranking, and has deep hole boring, automatic tool setting and automatic measurement of workpiece size.
As the leader in the research and development of high-end CNC heavy-duty and super-heavy machine tools, Wuzhong Group has been adhering to the business philosophy of “Wuzhong Machine Tool, Equipment China, Going Globalâ€, and has continuously developed domestic high-end CNC super heavy-duty machine tools with complete intellectual property rights. "Extreme Manufacturing" products.
The commonly used Pipette kits are mainly composed of a pipette and a pipette tip. The pipette tip is a single empty
Cavity reservoir; the pipette uses the principle of air displacement and controls the maximum displacement of the piston by rotating a screw with an ultra-fine thread
displacement, and then control the amount of liquid suction. There are the following problems when using the above kit for suction: 1. The suction volume is controlled by the pipette
After the pipette is sterilized or used for a period of time, it is easy to cause "hidden" failures, which cause the operator to be difficult to detect.
The actual suction volume is inaccurate, and it needs to be adjusted frequently, and the operation is cumbersome and time-consuming; 2. To improve the pipetting accuracy, the operator's
The operation requirements are high, and it is easily affected by factors such as the suction speed, the depth of the tip below the liquid level, and the inclination angle of the pipette.
The actual suction volume will be heard; 3. The actual suction volume will be affected because the suction head cover is not tight and leaking, and it will not be easily detected; 4.
When performing experiments that require high accuracy, such as analysis, in the operation of equal volume aspiration of liquids with different densities, the actual
The actual suction volume will be affected by the density itself; 5. In order to improve the accuracy, this type of pipette needs to carry out high
Cost-optimized design results in extremely high pipette costs.
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