CS206152B1 - Method of drilling the high-rigid steels with the mattensic structure - Google Patents

Method of drilling the high-rigid steels with the mattensic structure Download PDF

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Publication number
CS206152B1
CS206152B1 CS2877A CS2877A CS206152B1 CS 206152 B1 CS206152 B1 CS 206152B1 CS 2877 A CS2877 A CS 2877A CS 2877 A CS2877 A CS 2877A CS 206152 B1 CS206152 B1 CS 206152B1
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CS
Czechoslovakia
Prior art keywords
temperature
drilling
drilled
martensitic structure
steels
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Application number
CS2877A
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Czech (cs)
Slovak (sk)
Inventor
Pavol Seckar
Original Assignee
Pavol Seckar
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Publication date
Application filed by Pavol Seckar filed Critical Pavol Seckar
Priority to CS2877A priority Critical patent/CS206152B1/en
Publication of CS206152B1 publication Critical patent/CS206152B1/en

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  • Heat Treatment Of Articles (AREA)
  • Earth Drilling (AREA)

Description

Vynález sa týká vřtania vysokopevných ocelí s martenzitickou štruktúrou, ktorým sa rieši problém zvýšenia životnosti nástroj a.The invention relates to the drilling of high-strength steels with a martensitic structure, which solves the problem of increasing tool life.

Obrábanie vysokopevných ocelí s martenzitickou štruktúrou vyrobených technológiou tepelnomechanického spracovania je pre ich vy soků pevnost’, húževnatosť a tvrdost obtiažné.Machining high strength steels with a martensitic structure made by thermo-mechanical processing technology makes their high strength, toughness and hardness difficult.

V súčasnom období sa používá technológia tepelno-mechanického spracovania najma na výrobu polotovarov vo formě plechu. Pre ich obrábanie je možné použit’ rózne technologické spósoby, ako vrtanie, sústruženie, frézovanie, obrábanie, hoblovanie nástrojmi, ktorých režná rana je tvořená tvrdokovovými doštičkami so spekaných karbidov, alebo sa dajú použit modemé spósoby elektroiskrového, anódomechanického alebo elektrochemického obrábania. Nevýhodou uvedených sposobov obrábania je nízká produktivita práce, potřeba drahých strojov a pri obrábaní nástrojmi s tvrdokovovými doštičkami, ich nízká životnost.At present, the technology of thermo-mechanical processing is used mainly for the production of semi-finished products in the form of sheet metal. They can be machined using various technological methods, such as drilling, turning, milling, machining, planing with tools whose cuts are made of carbide inserts with sintered carbides, or modem methods of electro-spark, anode-mechanical or electrochemical machining can be used. The disadvantages of the mentioned machining methods are low labor productivity, the need for expensive machines and their tool life when machining with carbide inserts.

Uvedené nedostatky odstraňuje spósob podlá vynálezu, ktorého podstata spočívá v tom, že do | vřtaného miesta je dodávané množstvo tepla za-The above-mentioned drawbacks are overcome by the method according to the invention, which consists in the fact that it does not the amount of heat supplied is

Claims (1)

PREDMETSUBJECT Spósob vřtania vysokopevných ocelí s martenzitickou štruktúrou vyznačujúce sa tým, že do vřtaného miesta sa dodá množstvo tepla, ktorým sa bezpečujúce teplotu materiálu až do 200 °C nad teplotu A3 připadne A^, a potom sa materiál vřta s nástrojom so vsadenou tvrdokovovou doštičkou.A method of drilling high strength steels with a martensitic structure, characterized in that a quantity of heat is supplied to the drilled spot by which a material safety temperature of up to 200 ° C above A 3 or A 3 is supplied, and then the material is drilled with a carbide insert. Výhodou spósobu vřtania podlá vynálezu je zníženie opotrebenia ostria nástroja pri zváčšení režných podmienok.The advantage of the method of drilling according to the invention is to reduce the wear of the tool blade when increasing the cutting conditions. Pri vřtaní materiálu z vysokopevnej ocele s martenzitickou štruktúrou materiálu sa tento ohřeje plameňom, elektroodporove alebo elektroinduktívne, pričom sa dodá také množstvo tepla až sa zohreje na teplotu až do 200 °C nad teplotu premeny martenzitu na austenit, avšak materiál nástroja tvrdokovovou doštičkou je schopný pri tejto teplote obrábať režnou rýchlosťou okolo 4 m/min. a posuvom okolo 0,05 mm/otáčka.When drilling a high-strength steel material with a martensitic structure of the material, it is heated by flame, electro-resistance or electro-inductive, adding as much heat to the temperature up to 200 ° C above the martensite to austenite conversion temperature. at this temperature at an average speed of about 4 m / min. and a feed of about 0.05 mm / revolution. Tento spósob je možné použit pri vřtaní otvorov do kladiviek šrotovníka připadne nožov rezačiek, alebo iných pracovných orgánov alebo dielcov z vysokopevných ocelí s martenzitickou štruktúrou, kde otvory slúžia na pripevnenie a kde případná změna štruktúry a tvrdosti v okolí otvoru nespósobí změnu funkcie, připadne zvýšené opotrebenie.This method can be used to drill holes in the hammers 'hammers or cutters' blades or other working elements or high-strength steels with martensitic structure, where the holes serve to fasten and where any change in structure and hardness around the hole does not change function or increased wear . zabezpečí teplota materiálu až do 200 °C nad teplotu A3, připadne Acm a potom sa materiál vřta nástrojom so vsadenou tvrdokovovou doštičkou.provides a material temperature of up to 200 ° C above the temperature of A 3 , or A cm, and then the material is drilled with a carbide insert.
CS2877A 1977-01-03 1977-01-03 Method of drilling the high-rigid steels with the mattensic structure CS206152B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS2877A CS206152B1 (en) 1977-01-03 1977-01-03 Method of drilling the high-rigid steels with the mattensic structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS2877A CS206152B1 (en) 1977-01-03 1977-01-03 Method of drilling the high-rigid steels with the mattensic structure

Publications (1)

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CS206152B1 true CS206152B1 (en) 1981-06-30

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CS (1) CS206152B1 (en)

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