Metal vapor discharge lamp tube molding die and forming method

Details Metal vapor discharge lamp tube molding die and forming method Metal vapor discharge lamp tube molding die and forming method

C - Chemistry, Metallurgy

04

B

25/139, 25/62

C04B 35/64 (2006.01) B28B 3/00 (2006.01) B28B 11/00 (2006.01) C03B 7/08 (2006.01) C03B 9/347 (2006.01) C03B 9/36 (2006.01) C03B 17/04 (2006.01) C04B 35/636 (2006.01) H01J 9/24 (2006.01) H01J 61/30 (2006.01)

Patent

CA 1196772

Abstract of the Disclosure A ceramic green arc tube for a metal vapor discharge lamp wherein an outer diamter of the arc dis- charging portion is larger than that of the end portions holding the discharging electrodes is produced by preparing a stiff plastic body consisting mainly of a ceramic material or which main component is alumina, and a binder of which main component is thermal geltinizing organic substance; forming the prepared body into a straight tubular body by means of an extruder; placing the tubular body into an inner cavity of molding die having the above described ceramic arc tube shape wherein the molding die has been previously heated; closing one end portion of the tubular body; applying a compressed fluid from another opened end portion of the tubular body into the inside of said tubular body to inflate the central portion of tubular body until contacting to the inner cavity surface of the molding die,; hardening and drying the inflated body with the heat of previously heated molding die; and ejecting the dried body from the die. This production is characterized in that the forming is effected by using a die comprising two halves of die divided by a plane parallel to an axial direction of the tube, said two halves forming an inner circumferential cavity conforming to the shape of the tube when the two halves are engaged, vents provided at the cavity portion and perforating from the inner surface of the cavity to the outside, and heating means.

408585

Affiliated with

Also associated with

Rating

Metal vapor discharge lamp tube molding die and forming method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal vapor discharge lamp tube molding die and forming method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal vapor discharge lamp tube molding die and forming method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1190429