INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS
The necessary level of material’s hardness is determined by the exploitation conditions and presence of technological operations during manufacturing of articles. Mechanical edge cutting machining of wear resistant materials is impeded because of their high hardness. It is recommended to apply annea...
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| Format: | Article |
| Language: | English |
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Belarusian National Technical University
2015-11-01
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| Series: | Литьë и металлургия |
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| Online Access: | https://lim.bntu.by/jour/article/view/521 |
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| author | V. V. Netrebko |
| author_facet | V. V. Netrebko |
| author_sort | V. V. Netrebko |
| collection | DOAJ |
| description | The necessary level of material’s hardness is determined by the exploitation conditions and presence of technological operations during manufacturing of articles. Mechanical edge cutting machining of wear resistant materials is impeded because of their high hardness. It is recommended to apply annealing in order to decrease hardness and improve machinability. The purpose of the work consisted in obtaining of regression dependences of cast iron’s macrohardness on its chemical content after annealing at 730 °С. With the use of mathematical experimental design the regression dependences of cast iron’s macrohardness and structural components’ microhardness on С, Cr, Mn, Ni content have been established. The minimal hardness of 27,6 HRC after annealing at 730 °С is obtained in the cast iron containing: 3,9% С; 11,4% Cr; 0,6% Mn; 0,2% Ni. The maximal hardness of 70,4 HRC is obtained when the content is as follows: 1,1% С; 25,6% Cr; 5,4% Mn; 3,0% Ni. Annealing at 730 °С decreases the cast irons’ hardness containing the minimal amount of Cr, Mn and Ni. Annealing at 730 °С is recommended for cast irons alloyed by Mn and Ni for increasing of hardness. |
| format | Article |
| id | doaj-art-2969a362b9ec4e55b810cb410b125ad1 |
| institution | Kabale University |
| issn | 1683-6065 2414-0406 |
| language | English |
| publishDate | 2015-11-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Литьë и металлургия |
| spelling | doaj-art-2969a362b9ec4e55b810cb410b125ad12025-08-20T03:59:47ZengBelarusian National Technical UniversityЛитьë и металлургия1683-60652414-04062015-11-010295101515INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONSV. V. Netrebko0Zaporizhzhia National Technical UniversityThe necessary level of material’s hardness is determined by the exploitation conditions and presence of technological operations during manufacturing of articles. Mechanical edge cutting machining of wear resistant materials is impeded because of their high hardness. It is recommended to apply annealing in order to decrease hardness and improve machinability. The purpose of the work consisted in obtaining of regression dependences of cast iron’s macrohardness on its chemical content after annealing at 730 °С. With the use of mathematical experimental design the regression dependences of cast iron’s macrohardness and structural components’ microhardness on С, Cr, Mn, Ni content have been established. The minimal hardness of 27,6 HRC after annealing at 730 °С is obtained in the cast iron containing: 3,9% С; 11,4% Cr; 0,6% Mn; 0,2% Ni. The maximal hardness of 70,4 HRC is obtained when the content is as follows: 1,1% С; 25,6% Cr; 5,4% Mn; 3,0% Ni. Annealing at 730 °С decreases the cast irons’ hardness containing the minimal amount of Cr, Mn and Ni. Annealing at 730 °С is recommended for cast irons alloyed by Mn and Ni for increasing of hardness.https://lim.bntu.by/jour/article/view/521сast ironhardnessalloyingstructureannealing |
| spellingShingle | V. V. Netrebko INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS Литьë и металлургия сast iron hardness alloying structure annealing |
| title | INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS |
| title_full | INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS |
| title_fullStr | INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS |
| title_full_unstemmed | INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS |
| title_short | INFLUENCE OF ANNEALING ON HARDNESS OF Cr-Mn-Ni CAST IRONS |
| title_sort | influence of annealing on hardness of cr mn ni cast irons |
| topic | сast iron hardness alloying structure annealing |
| url | https://lim.bntu.by/jour/article/view/521 |
| work_keys_str_mv | AT vvnetrebko influenceofannealingonhardnessofcrmnnicastirons |