How to determine the hardness of metal at home? -

How to test the hardness of metal - the main secrets

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When it comes to metals, an important indicator is its hardness. A factor of this kind plays a significant role in the choice of whether or not to use a particular metal in production for the manufacture of products for a specific purpose. It is worth understanding this issue in more detail, which requires testing the hardness of metal in the production line of various industries.

We carry out a visual inspection

In order not to buy the “wrong” knife, you need to carefully consider the product. To do this, you need to direct your gaze along its surface, which should represent an absolutely straight line. The existing curvature is a signal that the buyer has a defect in his hands, which may be the result of a violation of steel smelting technology. It's hardly worth buying such a knife.

Methods for testing metal hardness

Experts distinguish several options for checking characteristics:

According to the Brinnell method, a steel ball takes part in the verification process. It is pressed under great pressure into a metal surface. Then a special magnifying glass comes into effect, and with its help the specialist measures the diameter of the hole. Hardness is determined from tabular data. This method is the first method for determining the nature of the metal. This is how soft alloys are measured.
Rockwell's technique involves impacting a metal surface with a diamond cone. A special press is used to measure the hardness of soft, colored, thin Me. It is not considered very accurate, although it is successfully used for the study of hard alloys.
Similar actions to the previous one are included in the Vikxer method, which involves turning to a diamond pyramid, only the angle of the top is not 120, but 136 degrees. The load is carried out strictly perpendicular to the metal and increases slowly. Refers to high-precision methods.
Shore's method involves the presence of a striker with a diamond-coated tip. It falls from a specific height onto the surface of the material being tested. Hardness is measured by the height of the striker's rebound. This methodology is distinguished by a large scatter of readings; for the most part it is used to measure curved objects and large parts.

At home, the indicator is also measured, but you should not expect high accuracy. When you turn to professionals, you can get a highly accurate result, and this is a crucial moment. Some conduct home education to determine this value, using an ordinary bottle and scratching it with a metal object, for example, a knife blade. Metal of 62 units easily scratches glass, which cannot be said about 56 units.

What does the hardness of the metal indicate, what does it give

The question arises as to why this parameter needs to be measured at all. The characteristics of metals are important to those involved in the steel heat treatment industry. The conclusion about the mechanical properties of the weld is also obtained by studying the heat-affected surface.

The feasibility of the research being carried out is also predetermined by the intention of manufacturers to obtain high-strength products so that they can withstand different operating conditions, temperature changes, and ensure reliability. The hardness of a metal product is a primary structural characteristic.

Research is carried out with the following objectives.

Analyze the state of the material under the influence of time.
Obtain knowledge of likely destructive consequences to improve operational capabilities.
Monitor the results obtained as part of the temperature treatment.

According to the information acquired during the experiments, it is possible to determine the resistance to abrasion and wear of the source material.