Pencil/QHQ-A/pencil scratch Tester portable hardness tester

Model: QHQ-A

According to 9-1 g B/T 5 7 3 9 9 6 design and manufacturing. Apparatus for mechanical, three-point contact with the surface) two points for the LUN, as refills), always ensure the coating formed 4 5 degree angle to be measured, and horizontal instrument movement, to complete the testing process and determination of coating's ability to resist deformation. This method is designed and manufactured according to the manual, pencil markings. Apply coating hardness testing. Equipment and instrument

User manual

I. purpose:

Coating hardness coatings manufacturing, coating (coated sheet) quality index of the industry. Film hardness by pencil scratching method since the 80 's is commonly used by international test methods. Has been in the development study and industrial production to promote this test method. This instrument is based on national standards ' test method for film hardness pencils ' of the GB6379-86 2nd, 3 manual operation method and the design and manufacture. Instruments can be used in the laboratory, can also be applied to the construction site and in any direction to identify film hardness.

II. structure and working principle

Apparatus for mechanical, three-point contact with the surface (two points for the round, as lead) keep a pencil with the 45 ° angle on the surface to be measured, is used to promote the instrument movement, to complete the testing process.

III. application requirements

1. GB1279-79 preparation of test pieces of the General preparation of paint film three, generally smooth Tin plate 120X50X (O.2-0.3) mm, or substrate and the size of the product separately.

2. test conditions: in accordance with construction requirements for product standards or conditions