Abstract and keywords
Abstract (English):
The paper is focused on the problem of the service life of the dredger chain, which largely depends on the efficiency and reliability of the hinge joint, when a mineral abrasive gets into the structural gap resulting in rapid wear of the joint under high dynamic loads. There has been developed a science-based technology of repairing parts of the assembly, without reducing the resource, from cheap and accessible (non-deficient) materials, taking into account modern technical and economic requirements, on samples. Wear resistance of samples of friction pairs has been defined in terms of a chain operating model. The research method is based on comparing the wear rate of samples in a pair made of steel 110Mn13 (sleeve - pin), 110Mn13 and 38CrNi3M (sleeve - pin), according to the standard technologies and taken as a reference, with pairs made of steel 110Mn13, C45K, facing with wire SV08A, electrodes E50A – UONI 13/55 and E – 190Cr5Si7 – LEZ – T – 590 – NG after heat treatment, chemical and heat treatment, surface plastic deformation. Samples were tested in the water-abrasive environment with a load of 6615 N (675 kgf). The wear resistance parameters were determined as following: 1) reference pairs of steel 110Mn13 (bushing-pin) and 110Mn13 (bushing), 38CrNi3Mo (pin); 2) pairs of steel 110Mn13 (bushing) and facing with wire SV08A (pin); 3) pairs of steel 110Mn13 (bushing) and cladding with electrodes E–190Cr5Si7–LEZ –T–590– NG (pin); 4) pairs of steel C45K (bushing) and cladding with E –190Cr5Si7 – LEZ – T – 590 – NG electrodes (pin); 5) pairs of steel C45K (bushing) and clad-ding with E50A – UONI 13/55 electrodes (pin). A graph of dependence of the bushing and pin wear on the relations of initial hardness and structures of friction pair has been built. It is recom-mended to restore the pin with wear-resistant electrodes E – 190Cr5Si7 – LEZ – T – 590 – NG paired with 110Mn13 steel bushing with surface plastic deformation. The wear resistance of a pair, with a different combination of structures, does not depend on the ratio of hardness of Hsl / Hfin. The materials of the pair worn within the reference samples can be recommended for the operational tests.

suction dredge, scoop chain, pin-bushing, wear, wear resistance, wear test
Publication text (PDF): Read Download

1. Gurdin K. Volge vernut glubinu [The Volga will be made deep again]. Argumenty nedeli, 2010, no. 43 (233). Available at: (accessed: 12.07.2019).

2. Problemu dnouglubitel'nyh rabot na Kaspii obsudili v Moskve [Dredging problem of the Caspian was discussed in Moscow]. Available at: (accessed: 10.11.2016).

3. Tylczak J. H. Abrasive wear. ASM Handbook. Materials Park, OH, ASM International, 1992, no. 18, pp. 184-190.

4. Hawk J. A. Wilson R. D., Catrpillar M. T. Abrasive wear failures. ASM Handbook. Materials Park, OH, ASM International, 2002, no. 11, pp. 906-921.

5. Donskih D. F., Pogodaev L. I. Sposoby povysheniya nadyozhnosti sharnirnogo soedineniya cherpakovoj cepi dnouglubitel'nyh zemsnaryadov [Ways to increase reliability of scoop chain joint of dredging dredgers]. Trenie, iznos, smazka, 2010, vol. 13, no. 44, pp. 15-27.

6. Kartyshov A. V. Iznosostojkost' detalej zemsnaryadov [Wear resistance of dredger parts]. Leningrad, Mashinostroenie Publ., 1972. 160 p.

7. Bessmertnyj D. E. Povyshenie rabotosposobnosti cherpakovoj cepi dnouglubitel'nyh zemsnaryadov na osnove vybora materialov pri izgotovlenii smenno-zapasnyh detalej v sudoremonte: avtoreferat dis. … kand. tekhn. nauk [Improving performance of scoop chain of dredgers based on choice of materials in manufacture of replaceable parts in ship repair: diss. abstr. cand. tech. sci.]. Nizhnij Novgorod, 2006. 22 p.

8. Hrushchyov M. M., Babichev M. A. Abrazivnoe iznashivanie [Abrasive wear]. Moscow, Nauka Publ., 1970. 252 p.

9. Zum Gahr K.-H. Wear by hard particles. Tribology International, 1988, vol. 31, no. 10, pp. 587-596.

10. Kragel'skij I. V. Trenie i iznos [Friction and wear]. Moscow, Mashinostroenie Publ., 1968. 480 p.

11. Drozdov Yu. N., Pavlov V. G., Puchkov N. V. Trenie i iznos v ekstremal'nyh usloviyah [Friction and wear in extremesituations]. Moscow, Mashinostroenie Publ., 1986. 224 p.

12. Ruban A. R., Petrovskij V. A., Chanchikov V. A. Formula poleznoj modeli [Formula of utility model]. Patent RF, no. 186030, 26.12.2018.

Login or Create
* Forgot password?