RESTORATION OF PRECISION PARTS OF HIGH-PRESSURE FUEL PUMPS OF DIESEL ENGINES WITH THE APPLICATION OF SULFOCHROMING METHOD

Дата поступления: 
16.04.2018
Год: 
2018
Номер журнала (Том): 
УДК: 
531.43
DOI: 

10.26731/1813-9108.2018.2(58).19-26

Файл статьи: 
Страницы: 
19
26
Аннотация: 

The work reflects the importance of the restoration of precision parts of high-pressure fuel pumps (HPFP) of diesel engines. The authors have studied the methods of restoration of precision parts of high-pressure fuel pumps. It is established that the wear protection can be provided by a film formed on a metal by applying chemical coatings to the surface. The coatings may contain sulfides, phosphides and other chemical derivatives of metals. The article substantiates the use of the low-temperature sulphochroming method. As a result of low-temperature sulphochroming of details of any configuration, a composite layer consisting of sulphides and intermetallic compounds is formed on the surface. In turn, the resulting sulphide layer provides a way for good alignment of the mating parts, in our case these are “plunger and bushing” with the possibility of reducing the gap between the parts within the range of 0.4‑1.0 μm. The use of the proposed method is expedient in view of the optimal processability and relatively low cost. By the developed method, up to 50 % of the worn out precision parts (plunger pairs) of the entire repair stock with wear up to 6 μm are restored. It has been established that, as a result of machining parts by the proposed technology, intermetallic compounds are formed and located at a depth of 9‑9.5 μm. The sulfochromated coating of friction pairs allows significantly improving the voltage stability in the initial period of operation and increasing their wear resistance under conditions of steady wear, especially precision parts under severe operating conditions. The article presents the results of experimental studies on the selection of the optimal amount of ingredients necessary for the restoration of precision parts using this method.

Ключевые слова: 
Список цитируемой литературы: 

1. Labarov D.B. Povyshenie kachestva vosstanovlennykh detalei putem primeneniya sul'fokhromirovaniya [Improving the quality of the restored parts by applying sulfochromination]. Ulan-Ude, 1999.

2. Labarov D.B., Dumnov S.N. K probleme povysheniya kachestva ekspluatatsii sel'skokhozyaistvennoi tekhniki v usloviyakh rezko kontinental'nogo klimata Sibiri i Dal'nego Vostoka [To the problem of improving the quality of the exploitation of agricultural machinery in the conditions of the sharply continental climate of Siberia and the Far East]. Vestnik Vostochno-Sibirskogo gosudarstvennogo universiteta tekhnologii  upravleniya [Bulletin of East Siberia State University of Technology and Management]. Ulan-Ude: VSGUTU Publ., 2012, No. 2 (37), pp. 49-53.

3. Labarov D.B., Dumnov S.N. Vosstanovlenie plunzhernykh par toplivnykh nasosov dizel'nykh dvigatelei metodom nizkotemperaturnogo sul'fokhromirovaniya [Recovery of plunger pairs of fuel pumps of diesel engines by low-temperature sulfochroming]. Nauchnoe obozrenie [Science Review]. Saratov, 2012, No. 5, pp. 328-332.

4. Dumnov S.N. Tekhnologiya vosstanovleniya pretsizionnykh detalei toplivnoi apparatury dizel'nykh dvigatelei sel'skokhozyaistvennoi tekhniki s ispol'zovaniem metoda sul'fokhromirovaniya. Avtoref.  dis. ... kand. tekhn. nauk: 05.20.03: zashchishchena 24.12.2009 [Technology recovery of precision parts of fuel equipment of diesel engines of agricultural machinery using the method of sulfochroming. Author's abstract. Ph.D. (Engineering) thesis: 05.20.03, defended 24.12.2009].Ulan-Ude, 2009, 20 p.

5. Dumnov S.N., Labarov D.B., Boloev P.A. K voprosu vosstanovleniya plunzhernykh par toplivnykh nasosov dizel'nykh dvigatelei [To the question of restoration of plunger pairs of fuel pumps of diesel engines]. Vestnik Vostochno-Sibirskogo gosudarstvennogo universiteta tekhnologii  upravleniya [Bulletin of East Siberia State University of Technology and Management]. Ulan-Ude: VSGUTU, 2014 No. 3 (48), pp. 48-53.

6. Rusanov V.A., Agafonov S.V., Daneev A.V., Lyamin S.V. Computer modeling of optimal technology in materials engineering. Lecture Notes in Electrical Engineering, 2014. Vol. 307, pp. 279-286.

7. Rusanov V.A., Agafonov S.V., Dumnov S.N., Daneev A.V., Lyamin S.V. Regression-tensor modeling of multivariate optimization of process for applying metal-coatings. Journal of Applied Mathematics and Physics, 2014. No. 2, pp. 1207-1223.

8. Agafonov S.V., Daneev A.V., Rusanov V.A., Sharpinskii D.Yu. Postroenie optimal'noi tekhnologii protsessa polucheniya azotirovannogo sloya v elektrostaticheskom pole [Construction of the optimal technology for the process of obtaining a nitrided layer in an electrostatic field]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], 2011, No. 2, pp. 38-46.

9. Rusanov V.A., Agafonov S.V., Daneev A.V., Lyamin S.V. Computer modeling of optimal technology in materials engineering. Lecture Notes in Electrical Engineering. 2014. Vol. 307, pp. 279-286.

10. Daneev A.V., Daneev R.A., Okladnikova E.V. Mnogofaktornaya optimizatsiya protsessa naneseniya metallopokrytii [Multifactorial optimization of the process of applying metal coatings]. Informatsionnye sistemy kontrolya i upravleniya v promyshlennosti i na transporte [Information systems for control and management in industry and transport]. Issue 27. Irkutsk: IrGUPS Publ., 2017, pp.154-169.    

11. Rusanov V.A., Agafonov S.A., Daneev A.V., Lyamin S.V. Aposteriornoe modelirovanie optimal'nogo mnogofaktornogo rezhima uprochneniya metallopokrytii [A posteriori modeling of the optimal multifactor regime of hardening of metal coatings]. Trudy SICPRO’ 2015. Kh  Mezhdunarodnoi konferentsii «Identifikatsiya sistem i zadachi upravleniya» [Proceedings of SICPRO '2015, the Xth International Conference "Identification of systems and control tasks"]. Moscow, 26-29 January 2015, Trapeznikov IPU RAN, pp. 938-947.      

12. Rusanov V.A., Agafonov S.V., Daneev A.V., Lyamin S.V. Regressionno-tenzornoe modelirovanie optimal'nykh protsessov mnogofaktornykh kognitivnykh sistem [Regression-tensor modeling of optimal processes of multifactorial cognitive systems]. Sbornik trudov 12-go Vserossiiskogo soveshchaniya po problemam upravleniya VSPU-2014 [Proceedings of the 12th All-Russian Conference on the Management Problems of VSPU, 2014], Moscow, 2014, pp. 3229-3242.           

13. Daneev A.V., Rusanov V.A., Agafonov S.V., Lyamin S.V. Regressionno-tenzornoe modelirovanie optimal'nykh protsessov mnogofaktornykh kognitivnykh system [Regression-tensor modeling of optimal processes of multifactorial cognitive systems]. Mekhanika nanostrukturirovannykh materialov i sistem. Sbornik trudov 2-i Vserossiiskoi nauchnoi konferentsii [Mechanics of nanostructured materials and systems. Collection of works of the 2 nd All-Russian Scientific Conference], 2013, pp. 119-133             

14. Daneev A.V., Rusanov V.A., Agafonov S.V., Lyamin S.V. Computer modeling of optimal technology in material engineering. Computation problems in engineering. Springer, XII, 2014, pp. 279-292.               

15. Daneev A.V., Agafonov S.V., Lyamin S.V. Mekhanicheskie svoistva ul'tradispersnykh splavov: sostoyanie razrabotok i perspektivy [Mechanical properties of ultradisperse alloys: state of development and prospects]. Sovremennye tekhnologii. Sistemnyi analiz. Modelirovanie [Modern Technologies. System Analysis. Modeling], No. 3, 2013, pp. 220-230.

16. Kargapoltsev S.K.,  Shastin V.I., Gozbenko V.E., Livshits A.V.,  Filippenko  N.G. Laser  alloying of wear surfaces with metal components // International Journal of Applied Engineering Research. 2017.  Т. 12. No 17. С. 6499-6503.