CYLINDER LIFE

Evening Post, Volume CXXII, Issue 106, 31 October 1936, Page 28

CYLINDER LIFE

NEW PROCESS EVOLVED

CHROMIUM HARDENING

(From "The Post's" Representative.) LONDON, October 7,

Chromium-hardened Diesel " engine: cylinders, treated by ' a new process which gives them four times the'wear resistance of ordinary commercial cylinders, are claimed to have been perfected by an English firm. ' ;. The process is the result of eighteen months' research and experiments in a special laboratory and workshop built to enable the experiments to be carried out in secret. It has been registered under a trade name, and is stated to reduce cylinder wear to a minimum. The invention will be made available to the engineering industry. Though the company itself will use the product only in Diesel engines, the .principles on which it .is made apply equally to motor-car engines, aeroplane-engines, tools, and machinery. It may / have far-reaching effects in the development of the.Diesel motor-car and' the Diesel aeroplane; . , , By electro-chemical means a deposit of chrome is deposited on cast iron. This,'it is stated, gives a surface harder than anything of the kind yet known,' a surface which resists both chemical and mechanical wear to. a greater extsut than ever before. For cylinder purposes it has the longest wear yet discovered. The tests give proof that not even the hardest cast iron cylinders will stand, up. to the effects .of wear,.whether;it,is due to heat, chemical action, or abrasive wear from the piston rings, as effectively ?s cylinders treated with the new process. ; ■