STEERING RACK AND HIGH FREQUENCY HARDENING THEREFOR

PURPOSE:To provide steering rack which reduces the occurrence of heat treatment strain, by a method wherein a hardening layer is formed on the back part of a tooth part of the steering rack to increase the degree of reinforcement. CONSTITUTION:In a steering rack 1, having a tooth part hardening laye...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KOBASHI HARUHIKO, SAKAMOTO HIDEJI, ICHINOSE MASANOBU, GOKAN HIDEO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY ENGINEERING ELEMENTS AND UNITS GEARING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS MOTOR VEHICLES PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRAILERS TRANSPORTING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To provide steering rack which reduces the occurrence of heat treatment strain, by a method wherein a hardening layer is formed on the back part of a tooth part of the steering rack to increase the degree of reinforcement. CONSTITUTION:In a steering rack 1, having a tooth part hardening layer 2 formed by high frequency hardening, an induction coil 9 having an approximately flat surface is positioned facing the back of the steering rack such that its flat surface is extended through a steering rack axis O and at right angles with a surface P3 inclined at an angle theta=20 deg. in an upward direction during mounting of a car body from a surface P2 extending at right angles with a tooth bottom part P1. The steering rack 1 is securely held by means of electrodes 7 and 8 and a holding member 10, and the back part is heated to a given temperature. A coolant is injected through pores 11 of the induction coil 9 against the heated part for cooling to form a back part hardening layer.