SU1315487A1 - Method for cyclic heat treatment of medium-carbon and low-alloy steels - Google Patents

Method for cyclic heat treatment of medium-carbon and low-alloy steels Download PDF

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Publication number
SU1315487A1
SU1315487A1 SU843755525A SU3755525A SU1315487A1 SU 1315487 A1 SU1315487 A1 SU 1315487A1 SU 843755525 A SU843755525 A SU 843755525A SU 3755525 A SU3755525 A SU 3755525A SU 1315487 A1 SU1315487 A1 SU 1315487A1
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SU
USSR - Soviet Union
Prior art keywords
heat treatment
carbon
low
medium
alloy steels
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Application number
SU843755525A
Other languages
Russian (ru)
Inventor
Владимир Васильевич Порубов
Игорь Васильевич Порубов
Original Assignee
В.В.Порубов и И.В.Порубов
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Priority to SU843755525A priority Critical patent/SU1315487A1/en
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Publication of SU1315487A1 publication Critical patent/SU1315487A1/en

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Abstract

Изобретение относитс  к области термической обработки и может быть использовано при термообработке деталей из уг.черодкстых и низколегированных сталей. Цель изобретени  - повышение прочностных характеристик стали (предела прочности и предела текучести) с сохранением высокого уровн  относительного сужени . Поставленна  цель достигаетс  термоцик- лированием относительно точки А|,закалкой с температуры выше Acj и многократным нагревом до температуры высокого отжига с охлаждением в воде . 1 табл. (Л СО СП оо The invention relates to the field of heat treatment and can be used in the heat treatment of parts made of carbon steel and low alloyed steels. The purpose of the invention is to increase the strength characteristics of steel (tensile strength and yield strength) while maintaining a high level of relative constriction. This goal is achieved by thermal cycling relative to point A |, quenching from a temperature above Acj and repeated heating to a high annealing temperature with cooling in water. 1 tab. (L SO SP oo

Description

113113

Изобретение относитс  к термической обработке материалов и может быть использовано при термообработке деталей из среднеуглеродиетых и низколегированных сталей.The invention relates to the heat treatment of materials and can be used in the heat treatment of parts from medium carbon and low alloy steels.

Целью изобретени   вл етс  повышение прочности при сохранении величины относительного сужени .The aim of the invention is to increase the strength while maintaining the value of the relative narrowing.

Пример. Провод т термическую обработку патрубков от бурильных труб 0 127 с толщиной стенки 10 мм из стали 38 ХНМ. Нагревы осуществл ют в электропечи сопротивлени  ОКБ 333, нагретой до 1000--1100°С„чтоExample. Conducted heat treatment of pipes from drill pipe 0 127 with a wall thickness of 10 mm from steel 38 HNM. Heating is carried out in an electric furnace of an OKB 333 resistance heated to 1000-1-100 ° C, which

54875487

обеспечивает скорость нагрева 1 - 5 С/с. Охла адение провод т на воздухе , быстрое охлаждение - в воду.Провод т четыре нагрева до 780 с, три охлаждени  на воздухе до 610°С-, четвертое охлаждение в воду до 70°С, нагрев до 920 С, охлаждение в воду до 70°С и отпуск при 610°С 40 мин, охлаждение на воздухе - в первом случае. Во втором случае операцию отпуска замен ют трем  нагревами до с охлаждени ми в воду.provides a heating rate of 1 - 5 C / s. Cooling is carried out in air, rapid cooling - into water. Four heating to 780 s, three cooling to 610 ° C in air, fourth cooling to 70 ° C in water, heating to 920 ° C, cooling to 70 to water ° С and tempering at 610 ° С 40 min, air cooling - in the first case. In the second case, the tempering operation is replaced by three heats up with cooling to water.

Результаты испытаний механических свойств приведены в таблице.The test results of mechanical properties are given in the table.

Claims (1)

Формула изобретенияClaim Способ термоциклической обработкиThe method of thermocyclic processing 50 среднеуглеродистых и низколегированных сталей, включающий термоциклирование относительно точки А( закалку с нагрева до температуры выше Асэ и отпуск, отличающийся тем,50 medium-carbon and low-alloy steels, including thermal cycling relative to point A ( quenching from heating to temperatures above Ac e and tempering, characterized by 55 что, с целью повышения прочности при сохранении величины относительного сужения, отпуск осуществляют путем многократного нагрева до температуры высокого отпуска и охлаждения в воде.55 that, in order to increase strength while maintaining the value of relative narrowing, tempering is carried out by repeated heating to a high tempering temperature and cooling in water.
SU843755525A 1984-06-25 1984-06-25 Method for cyclic heat treatment of medium-carbon and low-alloy steels SU1315487A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU843755525A SU1315487A1 (en) 1984-06-25 1984-06-25 Method for cyclic heat treatment of medium-carbon and low-alloy steels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU843755525A SU1315487A1 (en) 1984-06-25 1984-06-25 Method for cyclic heat treatment of medium-carbon and low-alloy steels

Publications (1)

Publication Number Publication Date
SU1315487A1 true SU1315487A1 (en) 1987-06-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU843755525A SU1315487A1 (en) 1984-06-25 1984-06-25 Method for cyclic heat treatment of medium-carbon and low-alloy steels

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392181A (en) * 2011-11-11 2012-03-28 江苏华程工业制管股份有限公司 Alloy steel, seamless steel pipe and heat treatment technology of shaped steel pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Федюкин В,К. Термическа обработка сталей и чугунов. Л., 1977, с.20-26. Авторское свидетельство СССР № 541878, кл. С 21 D 9/22, 1975. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392181A (en) * 2011-11-11 2012-03-28 江苏华程工业制管股份有限公司 Alloy steel, seamless steel pipe and heat treatment technology of shaped steel pipe
CN102392181B (en) * 2011-11-11 2013-01-23 江苏华程工业制管股份有限公司 Alloy steel, seamless steel pipe and heat treatment technology of shaped steel pipe

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