Waterjet is a processing tool. The standard of a good tool is: First, it must be efficient, secondly, it must be durable, that is, the failure rate is low, and third, the cost is low.
The first step: see the cutting efficiency.
Cutting efficiency includes cutting quality and cutting speed. A feature of waterjet cutting is that the lower the cutting speed, the higher the quality of the incision.
Take the same piece of material to several waterjet manufacturers for trial cutting, and then compare: with the same incision mass, who cuts faster; at the same cutting speed, who has a high quality incision. The minimum requirement for cutting is to cut the material. Cutting speed is a very reliable indicator of comparison.
The second step: compare durability.
The water jet's failure is mainly in the high pressure system. The performance of each waterjet manufacturer's product is high and low.
High-pressure cylinders, accumulators, high-pressure plungers, one-way body plugs, high-pressure seals, one-way valves and other components of good or bad quality, directly determine the level of waterjet failure rate. The longer the service life of these components, the better.
The third step: Compare maintenance and maintenance costs.
At present, waterjets do not have a prevailing standard, and parts interchangeability is very low. Moreover, the high-pressure components of waterjets have a limited useful life. Therefore, when buying a water jet, it is not only the price of the whole machine, but also the price of the accessories. Not only to look at unit prices, but also to calculate the comprehensive use of cost in conjunction with the service life.
In short, users can ignore the pressure, flow, accuracy, and other indicators, just to see and hear in person how to be guaranteed in the contract.