Pretreatment method for coating on molded metal article

Details Pretreatment method for coating on molded metal article Pretreatment method for coating on molded metal article

1996-12-06

1998-07-14

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Sonic or ultrasonic

427435, 4274432, 427444, 427560, B06B 120

Patent

active

057801223

ABSTRACT:
A solution which is stored in a treatment bath is stirred by vibration stirring means provided in the treatment bath in a range of receiving a metal molded article or around a substantially horizontal surface of the metal molded article so that mean acceleration a expressed in the following equation is at least 8 cm/sec.sup.2 : ##EQU1## where X, Y and Z, which are in units of cm/sec.sup.2, represent average acceleration values of flow rate changes within 60 seconds, measured simultaneously in three axial directions of X, Y and Z which are perpendicular to each other at a measuring position.

REFERENCES:
patent: 4101386 (1978-07-01), Dotzer et al.
Patent Abstracts of Japan, vol. 016, No. 086(C-0916), 3 Mar. 1992 & JP03 275130A
Galvanotechnik, vol. 76, No. 11, 1 Nov. 1985 & SU1 070 212A.
Patent Abstracts of Japan, vol. 096, No. 12, 26 Dec. 1996 & JP08 218180A.
Patent Abstracts of Japan, vol. 010, No. 139(C-348), 22 May 1986 & JP61 000582A.
Database WPI, Section Ch, Week 7920 & JP54 045 639a (no date avail.).

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