Recycled plastic particle density meter detection method

Density is a relatively important factor in measuring the quality of recycled plastic pellets. The density of recycled plastic pellets varies from batch to batch and density may vary. Different batches of recycled plastic pellets may differ in density. There are many, so for each batch of plastic, you need to test its density.
Recycled plastic granules are mainly graded according to the different raw materials used and the characteristics of the processed plastic granules. They are generally classified into one, two and three grades.
In order to avoid the recycled plastic particles used for blown film, the film thickness is affected by the difference in density. The density of recycled plastic fruit pieces mainly affects its mechanical strength properties. For example tensile strength, stiffness and hardness. The thickness of the blown film is affected by the tensile strength, so the recycled plastic pellets need to have a range of limits on density during production and use.
Recycled plastic pellet operation method
Particle measurement (accessory glass, tennis), ready for a density meter to detect solids
1. In the 0.000 state, the M1 flashes on the screen, put the tennis ball into the center of the water hanging bar, put the glass on the measuring frame, and after the stability symbol “0” is displayed, press the [ZERO] key to deduct the weight of the glass and the tennis ball.
2. Place the sample in the glass on the measuring frame.
3. After the stable symbol “0” is displayed, press the [ENTER] key once, and the memory status symbol M1 becomes M2, which means that the weight in the air is stored successfully.
4. Remove the tennis ball from the water bar and pour the sample from the glass into the tennis ball.
5. Put the tennis ball containing the sample in alcohol and wash it.
6. Put the sample of washed alcohol into the center of the hanging column in the water (note that no bubbles can be generated on the surface of the sample, and bubbles should be removed in time), and the glass is placed on the measuring frame.
7. When the stable symbol “0” is displayed, press the [ENTER] key once to display the density value.
8. Press A key to cycle: density value SG, volume S1, purity content percentage S2.
9. Press B to print the measured data (you need to purchase a dedicated printer).
10. Press the [ENTER] key once to return to the test state. Press the [ZERO] key to display 0.000.
Simply share it today. If you have technical problems that you don't understand, please contact Hangzhou Jinmai Instruments. We have a professional technical team to answer all kinds of density meter technical problems.

Piston Ring For NISSAN

What is a Piston Ring?

Piston ring is used to insert the piston groove inside the metal ring, piston ring is divided into two types: compression ring and oil ring. The compression ring can be used to seal the combustible mixture gas in the combustion chamber; The oil ring is used to scrape excess oil from the cylinder.


The piston ring is a kind of metal elastic ring with large outward expansion deformation, which is assembled in the profile and its corresponding annular groove. Reciprocating and rotating piston rings rely on the pressure difference of gas or liquid to form a seal between the outer circle of the ring and the cylinder and one side of the ring and the ring groove.


The significance of the piston ring:
Piston ring is the core component inside the fuel engine, it and cylinder, piston, cylinder wall together to complete the seal of fuel gas.

Commonly used car engines have two kinds of diesel and gasoline engines, because of their different fuel performance, the use of piston rings are not the same.

Early piston rings were formed by casting, but with the progress of technology, high-power steel piston rings were born, and with the continuous improvement of engine functions and environmental requirements, a variety of advanced surface treatment applications, such as thermal spraying, electroplating, chromium plating, gas nitriding, physical deposition, surface coating, zinc-manganese phosphating treatment, etc., the function of the piston ring is greatly improved.

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