Metal Kaplama Sertlik Test Durum

1) Sample: Watch ring material, base is aluminum, surface is electro-dye coating

2) Requirements: Test the hardness value of the surface coating

3) Test Cihazları ve Çevre

Due to the thin thickness of the coating, a micro Vickers hardness tester is generally used for testing. Bu test, Ebipro'dan dijital ekran mikro sertlik test cihazı DV-1AT-8P kullanır. Testten önce, makine standart sertlik bloğunu 636HV1 test etti ve beş testin ortalama değeri 633HV1 idi, bu da makinenin doğruluğunun ulusal standardın izin verilen hata aralığına girdiğini ve normal olarak test edilebileceğini kanıtladı. Laboratory test temperature: 25℃, humidity 40%

Micro Hardness Tester DV-1AT-8P

4) Preparation before testing

The entire surface of the material is not flat enough. If it is directly placed on the workbench, it is difficult to achieve a void-free coupling. If there is a gap between the material and the workbench, the test results will be inaccurate and the reference value of the test will be lost. This type of material can be used for simple sample preparation: flattening with a flattener, then fixing with a sheet clamp, and then placing it on the workbench for testing.

5) Test data

The coating material of the small sample is too thin and too soft, and the indentation is blurred after the test and the hardness test cannot be carried out.

After the ring sample is tested, a clearer indentation picture can be obtained, and Vickers hardness test can be performed

makine tipi	Testing frequency	Test gücü	Bekleme süresi	D1	D2	HV hardness value
DV-1AT-8P	1	100gf	5 saniye	28.1	30.59	215
	2	100gf	5 saniye	26.11	30.09	235
	3	100gf	5 saniye	28.6	31.08	208
	4	200gf	5 saniye	52.65	55.13	128
	5	200gf	5 saniye	51.9	54.14	132
	6	200gf	5 saniye	55.38	53.14	126
	7	300gf	5 saniye	79.13	78.13	90
	8	300gf	5 saniye	73.37	78.63	96
	9	300gf	5 saniye	75.37	75.12	98

6) Data analysis:

After testing, the test force from 100-300gf indentation is clear, and hardness can be measured; when the test force is less than 100gf or greater than 300gf, the indentation is not clear and cannot be measured.

7) Summary

The micro hardness tester DV-1AT-8P has HV and HK test scales. The standard configuration is equipped with HV diamond indenter. The machine has a hardness conversion scale. The test results can be directly converted to Rockwell, Brinell and other hardness values. The hardness test of metal coating materials can choose our company's micro hardness tester to test.