Basic detection method of concentration of aqueous cutting fluid

Index detection cutting fluid is an important part of maintenance of the cutting fluid, the cutting fluid comprises a conventional detection index content concentration, PH, antifoaming, rust performance.

When using cutting fluid daily , there are many methods for testing the concentration of cutting fluid. There are refractometer method , digital hand-held refractometer, acid hydrolysis and demulsification method, chemical titration method, simple experiment, etc. The most commonly used method is refractometer method. The following concentration by the cutting fluid by ATAGO (Atago) Corporate Test method:

1. In metal processing, we need to measure the concentration of cutting fluid. The most common and accurate method is refractometer method. When testing the cutting fluid with refractometer, we only need to drop 1-2 sample on the prism surface. Above, the sample is fully extended to cover the surface of the prism without any air bubbles, the sample cover is closed, and the cutting fluid measurement value can be visually read through the prism.

2. In addition to the daily use of the refractometer test, there is also a digital hand-held refractometer ; in daily metal processing, the cutting fluid is urgently needed, and we can use the digital hand-held refractometer , which is simple and quick to be used in the cutting fluid regulator. test. When the operator is measuring the concentration of the cutting fluid, it is only necessary to drop 1-2 drops of the sample to the surface of the prism to make the sample fully extend over the surface of the prism, and then press the “ START ” button to measure the cutting fluid. It is displayed in digital form.

3. In metal processing, the use of oil-containing cutting fluid can be used to solve the demulsification method. This method is also a concentration test method used at home and abroad. It is suitable for cutting fluid products containing a certain proportion of oil in the composition, such as emulsion. And microemulsions. The test method is more complicated than the former two; the acid hydrolysis demulsification method is carried out in a graduated long-necked volumetric flask, and the consumption of the oil phase after the complete demulsification of the mixed liquid is required, and the supplier is required. The conversion factor provided can be used to calculate the exact concentration of the cutting fluid.

4. The chemical titration method is to measure the concentration of the cutting fluid by measuring the shouting degree, the surfactant content or the content of other specific components in the cutting fluid. The method is convenient to operate, but is easily interfered by external factors and directly affects the end point of the titration. Accurately determine the concentration of the cutting fluid.

The above is a partial summary of the actual work experience, hoping to have a reference for the majority of lubrication workers and machine operators. Do not allow the concentration of the cutting fluid to be visually observed by personal experience. An accurate test method is required to obtain the standard cutting fluid concentration.

Freeze Dried Chive

Dehydrated chives are a new product developed and produced by dehydrated vegetable factories in recent years. They are used in instant noodle soups and fast food soups instead of dehydrated green onions. Pool, CF100 Ⅰ type vegetable cutter, drying room and dryer, grading sieve. 2 Technological process Fresh onion → finishing → cleaning → cutting → drying → sieving → packaging → finished product 3 Operation points 3.1 Raw material selection Middle chives are used as raw materials. 3.2 Arrange and remove the roots, old skin, yellow leaves, yellow tips, and leaf stems of the chives and put them separately for later use. 3.3 Cleaning Put the green leaves and white stems in the washing pool after cleaning, and remove them. Drain off the water. 3.4 Slice Adjust the vertical knife of the CF100 Ⅰ vegetable cutter to adjust the knife distance 6.2