Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Measuring – testing – or inspecting
Patent
1995-03-28
1998-06-16
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Measuring, testing, or inspecting
264409, 264411, 264 404, B28B 300
Patent
active
057665389
ABSTRACT:
In a method for quality control during production of concrete blocks by bringing a concrete mortar into an upwardly open hollow mold with a solid peripheral wall for forming at least one molded blank placed on a flat supporting surface, a thickness of a molded blank is determined contact-free for testing the dimensional stability. The volume of the molded blank is determined from the determined thickness and the cross-section of the hollow mold. The density is obtained from the weight and volume, which is a criteria for strength and resistance testing of the molded blank. Finally, the appearance of the molded blank is determined by at least one video camera and compared with the appearance of faulty molded blank to determine the molded blanks with surface errors. All results of the height, density and surface measurements can be used for control of the production arrangement.
REFERENCES:
patent: 4095925 (1978-06-01), Cruzen et al.
Aftergut Karen
Masa Aktiengesellschaft
Striker Michael J.
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