Optimization of annealing modes of cast tool made of R6M5L steel
A simple configuration cast tool made by the technology of chill casting with intensive cooling during crystallization from R6M5L steel is characterized by a fine-grained structure, increased alloying of the solid solution and a hardness of 62-63 HRC; it does not require final machining. A tool of c...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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National Academy of Sciences of Ukraine. Physico- Technological Institute of Metals and Alloys
2019-12-01
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| Series: | Металознавство та обробка металів |
| Subjects: | |
| Online Access: | https://momjournal.com.ua/sites/default/files/МОМ4_19-13-20.pdf |
| _version_ | 1797295071141298176 |
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| author | Kondratyuk Stanislav Ye. Parkhomchuk Zhanna V. Veis Valentyn I. |
| author_facet | Kondratyuk Stanislav Ye. Parkhomchuk Zhanna V. Veis Valentyn I. |
| author_sort | Kondratyuk Stanislav Ye. |
| collection | DOAJ |
| description | A simple configuration cast tool made by the technology of chill casting with intensive cooling during crystallization from R6M5L steel is characterized by a fine-grained structure, increased alloying of the solid solution and a hardness of 62-63 HRC; it does not require final machining. A tool of complex configuration due to the need for its mechanical processing by cutting is subjected to extended softening annealing. Recommendations for reducing the annealing time relate mainly to the rolling of tool steels.
The efficiency of annealing of rapidly chilled R6M6L steel during crystallization by three technological modes is investigated: annealing at 880 ºС with continuous cooling; with isothermal exposure in the temperature range of pearlite transformation and the least stability of austenite; annealing after austenization with triple heating to 750 ºС and cooling to room temperature. Based on the research results, regression equations were obtained that describe changes in the hardness of cast rapidly cooled steel within 55–20 HRC depending on the technological annealing scheme, temperature and duration of heating, cooling rate of castings and allow choosing the optimal annealing mode of the cast tool in accordance with the requirements for its hardness and technological conditions of production. |
| first_indexed | 2024-03-07T21:41:27Z |
| format | Article |
| id | doaj.art-4c51fa3367314fd1834834188f6e450c |
| institution | Directory Open Access Journal |
| issn | 2073-9583 2664-2441 |
| language | English |
| last_indexed | 2024-03-07T21:41:27Z |
| publishDate | 2019-12-01 |
| publisher | National Academy of Sciences of Ukraine. Physico- Technological Institute of Metals and Alloys |
| record_format | Article |
| series | Металознавство та обробка металів |
| spelling | doaj.art-4c51fa3367314fd1834834188f6e450c2024-02-26T08:31:40ZengNational Academy of Sciences of Ukraine. Physico- Technological Institute of Metals and AlloysМеталознавство та обробка металів2073-95832664-24412019-12-01254132010.15407/mom2019.04.013Optimization of annealing modes of cast tool made of R6M5L steelKondratyuk Stanislav Ye.0https://orcid.org/0000-0002-4978-6740Parkhomchuk Zhanna V.1https://orcid.org/0000-0002-3026-8951Veis Valentyn I.2https://orcid.org/0000-0001-8889-2303Physico-Technological Institute of Metals and Alloys of NAS of Ukraine, Kyiv, UkrainePhysico-Technological Institute of Metals and Alloys of NAS of Ukraine, Kyiv, UkrainePhysico-Technological Institute of Metals and Alloys of NAS of Ukraine, Kyiv, UkraineA simple configuration cast tool made by the technology of chill casting with intensive cooling during crystallization from R6M5L steel is characterized by a fine-grained structure, increased alloying of the solid solution and a hardness of 62-63 HRC; it does not require final machining. A tool of complex configuration due to the need for its mechanical processing by cutting is subjected to extended softening annealing. Recommendations for reducing the annealing time relate mainly to the rolling of tool steels. The efficiency of annealing of rapidly chilled R6M6L steel during crystallization by three technological modes is investigated: annealing at 880 ºС with continuous cooling; with isothermal exposure in the temperature range of pearlite transformation and the least stability of austenite; annealing after austenization with triple heating to 750 ºС and cooling to room temperature. Based on the research results, regression equations were obtained that describe changes in the hardness of cast rapidly cooled steel within 55–20 HRC depending on the technological annealing scheme, temperature and duration of heating, cooling rate of castings and allow choosing the optimal annealing mode of the cast tool in accordance with the requirements for its hardness and technological conditions of production.https://momjournal.com.ua/sites/default/files/МОМ4_19-13-20.pdfthermal treatmentannealingcast toolhigh-speed steel. |
| spellingShingle | Kondratyuk Stanislav Ye. Parkhomchuk Zhanna V. Veis Valentyn I. Optimization of annealing modes of cast tool made of R6M5L steel Металознавство та обробка металів thermal treatment annealing cast tool high-speed steel. |
| title | Optimization of annealing modes of cast tool made of R6M5L steel |
| title_full | Optimization of annealing modes of cast tool made of R6M5L steel |
| title_fullStr | Optimization of annealing modes of cast tool made of R6M5L steel |
| title_full_unstemmed | Optimization of annealing modes of cast tool made of R6M5L steel |
| title_short | Optimization of annealing modes of cast tool made of R6M5L steel |
| title_sort | optimization of annealing modes of cast tool made of r6m5l steel |
| topic | thermal treatment annealing cast tool high-speed steel. |
| url | https://momjournal.com.ua/sites/default/files/МОМ4_19-13-20.pdf |
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