Low speed large capacity centrifugeWidely used, the main component of the rotating arm is a metal structural component with high mechanical performance requirements. Chromium molybdenum alloy material is often used, but the weldability of this type of material is extremely poor. In response to the main technical difficulties, the causes of various defects were analyzed from two aspects: cold and hot cracking tendency. A new welding process of "manual straight line welding with low heat input after assembly" was developed, and corresponding technical measures were proposed to reduce the occurrence of various defects and meet the performance requirements of the alloy main component rotating arm.
Low speed large capacity centrifugeControl system:
Low speed and large capacity centrifuges are equipped with microcomputer control systems, which not only ensure the safe operation of the centrifuge but also automatically complete work tasks. Many centrifuges now have user-friendly control systems.
For example, rotor recognition function, safety lock function, fault prompt function, acceleration and deceleration curves, and so on. In addition to the above points, attention should also be paid to some details and necessary accessories.
The main component of low-speed large capacity centrifuges is the motor, which is divided into carbon brush motors and brushless motors. The former has been eliminated, and most centrifuges now use brushless motors, some of which even have braking functions.
Low speed large capacity centrifuges also have differences in refrigeration, and the current environmentally friendly technology is of course fluorine free refrigeration. In addition, noise issues should also be considered, and centrifuges with lower noise levels should be chosen as much as possible to maintain a comfortable experimental environment. Caution should also be exercised when it comes to accessories. Some experiments require the use of special centrifuge tubes to centrifuge toxic samples or samples that require ultra high speed centrifugation. Such centrifuge tubes must be equipped with corresponding sleeves to ensure safety.
There are also some special sample containers, irregular sample bottles, blood bags, etc. These details and accessories need to be carefully considered when choosing a centrifuge, otherwise normal operation cannot be carried out.