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When the supplier and the buyer agree through consultation, the Brinell hardness test block cast on the casting is attached for measurement(brown aluminium oxide). When continuously melting a large number of fast liquids of the same brand, the maximum weight of each batch shall not exceed the weight of the castings poured within 2h(white corundum sand). After negotiation and agreement between the supplier and the buyer, the batch weight can be changed.

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The allowable error specified in the analysis method is only set to ensure the accuracy of the judgment result, and has no relationship with other departments(aluminum oxide grit). The concentration of a dilute solution prepared by a liquid reagent is generally expressed by the volume of the concentrated solution plus the volume of water(garnet sand). If there is no such agreement, the measurement should be carried out at a representative position of the part.(brown aluminium oxide 54 grit wholesale suppliers usa)

Brinell hardness test should be carried out at a certain position of the casting determined through negotiation between the supplier and the buyer(brown aluminum oxide). The prepared sample is drunk in the dry-quenched steel cake or other sample preparation equipment and the meeting part is passed through 0.150mm (100 mesh) Germany(glass beads manufacturers). The technical requirements and precautions for sample chip processing, mixing, and single division are in accordance with this article.

(brown aluminium oxide 54 grit wholesale suppliers usa)If the weight of a casting is dry or greater than 2000kg, it will be a batch of castings(abrasive garnet sand). If the test result does not meet the requirements due to one of the following conditions, the test is invalid. The maximum weight of each batch of castings is 2000kg of castings that have been shoveled(abrasive blast media). Improper preparation of casting hair or surface of attached test block, improper operation of hardness tester. Improper preparation of test block.

If the test result fails to meet the requirements(brown fused alumina), and is not caused by the reasons listed in the following paragraph, two more hardness values can be measured near the measuring point to perform a shock test. The repeated test results all meet the driving requirements, and the hardness of the batch of clock parts is still qualified(garnet abrasive price). If one of the hardnesses does not meet the requirements, the hardness of the batch of castings is unqualified.(brown aluminium oxide 54 grit wholesale suppliers usa)

There is a bell-making defect in the test block or casting(white aluminium oxide). At this time, the test should be retested according to the previous paragraph. The thickness of not less than 2mm can be directly removed on the surface of the machine tool casting guide rail and carefully smoothed to determine the total Brinell tax(glass bead abrasive). The measuring position should be selected on the working surface not less than 10mm from the edge of the casting.

(brown aluminium oxide 54 grit wholesale suppliers usa)The roughness of the machine tool castings and the guide rail surface Brinell hardness are generally agreed upon by the design and casting production department(black aluminum oxide), and the attached casting test block with the thickness of the guide rail can be used. When determining the Brinell hardness value of the test block(sponge media abrasive), the distance between the indentation center and the edge of the sample should not be less than 2.5 times the indentation diameter.

When inspecting the Brinell hardness of the guide rail surface or the attached casting test block(pink aluminum oxide), it should be carried out in accordance with the provisions of GB231-84 "Metal Brinell Hardness Test Method". First, determine the hardness value at a place. If it meets the requirements, the awareness of the place is qualified(steel shot abrasive). If the test result does not meet the requirements due to one of the following conditions, a re-inspection should be carried out.(brown aluminium oxide 54 grit wholesale suppliers usa)