. Dental metallurgy, for the use of dental students and practitioners. d flowupon the rim, and the attempt to unite it to the plate willnot be successful. But to avoid such a result, the flame ofthe blow-pipe should, as a preliminary step, be directedexclusively upon the latter, and union of the rim and platecan hardly fail to take place. 104 METALLURGICAL APPARATUS Supports.—In melting small quantities of gold or silver,or in soldering with the blow-pipe flame, it is necessary toperform these operations upon a support made of some suit-able body, such as charcoal, coke, pumice-stone, or asbes
. Dental metallurgy, for the use of dental students and practitioners. d flowupon the rim, and the attempt to unite it to the plate willnot be successful. But to avoid such a result, the flame ofthe blow-pipe should, as a preliminary step, be directedexclusively upon the latter, and union of the rim and platecan hardly fail to take place. 104 METALLURGICAL APPARATUS Supports.—In melting small quantities of gold or silver,or in soldering with the blow-pipe flame, it is necessary toperform these operations upon a support made of some suit-able body, such as charcoal, coke, pumice-stone, or asbestosand plaster, charcoal and plaster, etc. Autogenous Soldering.—Autogenous soldering is a sweat-ing process in which a lower fusing alloy is not used. Themetallic parts are brought to intimate contact and the piecesheated until the metals fuse upon their surfaces, and thus forma joint. Gold, by using great care, may be soldered in thismanner. Lead surfaces are also frequently united by autog-enous soldering as in the lead chambers of the sulphuricacid
Size: 1551px × 1610px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherphila, bookyear1917
