Research on the Effect of Heat Treatment Parameters of Rotary Tiller Blade on Anti-Wear Properties

2011 ◽  
Vol 391-392 ◽  
pp. 620-624
Author(s):  
Yong Ying Du ◽  
Dan Jin
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Orthogonal Design ◽  
Spring Steel ◽  
Wear Property ◽  
Wear Properties ◽  
Treatment Technology ◽  
Tempering Temperature ◽  
Resistance Property ◽  
Treatment Parameter

65Mn spring steel is mainly used for rotary blade which is a vulnerable part of farming machinery. The experiment of the wear-resistance property for 65Mn spring steel under different heat treatments is conducted. The results are discussed based on the regression orthogonal design. The wear-resistance property of 65Mn steel has been discussed by applying diverse heat treatment technology and the optimum parameters of heat treatment for the best anti-wear property are obtained through experiments. The influence of the parameters on anti-wear property is studied by applying the regression orthogonal design. The relation between the wear mass loss and diverse heat treatment parameters has been given by using planar and contour figure. The optimum heat treatment parameter for maximum anti-wear ability is obtained as following: 852.64 for quenching temperature, 18.36min for quenching time, and 145.44 for tempering temperature, respectively.

Effect of Heat Treatment Parameters on the Hardness of Soil Working Parts

2011 ◽  
Vol 422 ◽  
pp. 701-704
Author(s):  
Yong Ying Du ◽  
Yu Guo ◽  
Yu Ning Wang ◽  
Ming Ang Yin
Keyword(s):  
Heat Treatment ◽  
Orthogonal Design ◽  
Great Influence ◽  
Spring Steel ◽  
Treatment Technology ◽  
Quenching Temperature ◽  
Tempering Temperature ◽  
Hardness Property ◽  
Treatment Parameter ◽  
Planar Figure

The experiment of the hardness property for 65Mn spring steel under different heat treatments is conducted. The results are discussed based on the regression orthogonal design. The hardness property of 65Mn steel has been discussed by applying diverse heat treatment technology and the optimum parameters of heat treatment for the best hardness value are obtained through experiments. The influence of the parameters on hardness property is studied by applying the regression orthogonal design. The relation between the hardness and diverse heat treatment parameters has been given by using planar figure. The optimum heat treatment parameter for maximum hardness ability is obtained as following: 851.4°C for quenching temperature, 18 min for quenching time, and 146.4°C for tempering temperature, respectively. The result showed that the selection of material heat treatment process parameters has a great influence on the hardness of the material, which will provide a reliable basis to further study the wear resistance of material.

Analysis of Material and Heat Treatment of the High-Pressure Fracturing Pump Valves

2011 ◽  
Vol 339 ◽  
pp. 502-505
Author(s):  
Qi Ming Yang ◽  
Li Jie Yang
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Working Life ◽  
Nickel Steel ◽  
Treatment Technology ◽  
The Core ◽  
Heat Treatment Technology ◽  
Heat Hardening ◽  
Wear And Tear ◽  
Core Hardness

Fracturing pump valve's failure, except wear and tear factors, and also decided by the scope of it's contact stress, material and heat treatment in technology. Through the analysis of these, some conclusions had been found: The content of remnant austenite would be affected the performance of wear resistance, and the core hardness would be directly affected the working life of it. If the choice of the material and heat treatment technology was not been suitable, and the core intensity was not enough, it could loss the capability of sealing. According to the failure mechanism, used low chrome(nickel) steel, and the heat treatment of carburize+heat hardening+low-temperature tempering was reasonable.

scholarly journals Effect of Different ZrN Addition on Microstructure and Wear Properties of Titanium Based Coatings by Laser Cladding Technique

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 261 ◽  
Author(s):  
Xiaodong Li ◽  
Shasha Liu ◽  
Jiawei Wang ◽  
Mengxiao Yu ◽  
Haibo Tang
Keyword(s):  
Wear Resistance ◽  
Spherical Shape ◽  
Dendritic Morphology ◽  
Wear Property ◽  
Wear Properties ◽  
Two Phase ◽  
Wear Performance ◽  
Tc11 Titanium Alloy ◽  
New Phase ◽  
Coating Hardness

In order to improve the wear resistance of TC11 titanium alloy, a mixture of ZrN (10 wt.%, 20 wt.%, 30 wt.%, and 40 wt.%) and TC11 alloy powders are laser cladded on a forged TC11 substrate. The microstructure and wear property of coatings are systematically analyzed. The results show that the microstructure of sample with 10 wt.% ZrN addition has a very fine α + β two-phase microstructure, powders of ZrN are fully melted with no new phase appearance. By increasing the amount of ZrN to 20 wt.%, new phases of TiN0.3 precipitate with the dendritic morphology in the coating. A further increase in ZrN to 30 wt.% and 40 wt.% do not significantly change the microstructure of the cladded layer but increase the microhardness significantly, phases of TiN form with further enhancement of coating hardness. At the bottom of the cladded layer, the morphology of TiN0.3 and TiN precipitations changes into a spherical shape with small size. However, the wear performance of the coatings gradually reduces due to the increase of brittleness, and the superior wear properties of the coating are achieved when sample consisted of 20 wt.% ZrN.

Microstructure and Wear Property of Zn-Al Alloy Reinforced with Carbonized Rice Husks

2012 ◽  
Vol 463-464 ◽  
pp. 494-498
Author(s):  
Su Qiu Jia ◽  
Yun Hai Ma ◽  
Jin Tong ◽  
Guo Jun Liu
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
The State ◽  
Al Alloy ◽  
Wear Property ◽  
Rice Husks ◽  
Semi Solid

Zn-Al composites with carbonized rice husks were prepared by permanent mould. Microstructure and wear property of Zn-Al composites were measured under the condition of as-cast heated at 375 °C and 430 °C corresponding to solid and semi-solid range. The microstructure of as-cast, heated at 375 °C and 430 °C were different. The microstructure of as-cast Zn-Al alloy revealed primary a dendrites (α) and eutectoid α+η (α,rich Al, η rich Zinc)phases. The microstructure of ZA alloy with carbonized rice husks was fine dendrites for heated at 375 °C and second and third dendrites were almost dispersed. After semi-solid treatment, the microstructure of Zn-Al composites presented quasi-round or round and large with time prolonger. The hardness of Zn-Al composites rose with carbonized rice husks and increased slightly by heat treatment. Wear resistance of Zn-Al composites with carbonized rice husks improved significantly and increased with carbonized rice husks. But at the same amount of carbonized rice husks the wear resistance of the composite varied little regardless of being in the state of as-cast or heat treatment.

scholarly journals The Effect of Palm Kernel Shell Ash on the Mechanical and Wear Properties of White Cast Iron

2020 ◽  
Vol 45 (2) ◽  
pp. 20-27
Author(s):  
Kayode I. Fesomade ◽  
Damilola D. Alewi ◽  
Saliu O. Seidu ◽  
Sheriff O. Saka ◽  
Bonaventure I. Osuide ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Cast Iron ◽  
Elemental Composition ◽  
White Cast Iron ◽  
Palm Kernel ◽  
Rotary Furnace ◽  
Wear Properties ◽  
Palm Kernel Shell ◽  
The Matrix

This study investigates the influence of palm kernel shell ash (PKSA) on mechanical and wear properties of white cast iron (WCI) particularly its influence on its microstructure, elemental composition, hardness and wear resistance. The PKSA was characterized to determine its elemental composition, and it was found to contain high amount of silicon (Si) and iron (Fe) followed by calcium (Ca) and other trace elements. The cast iron was cast into rods of specific dimension with sand casting method using rotary furnace to re-melt cast iron scrap. The WCI rods were then cut into bits for the various test. Heat treatment operation was carried out to determine its properties. Upon completion of the examinations, it was found that the PKSA increased the cementite phase within the matrix of the cast iron, and reduced the pearlitic phase and graphite formation, which gave it increased hardness, and perfect wear resistance due to the increment in carbon content and reduction in silicon content. Also, upon heat treatment, it was found that the PKSA reduced the pearlitic phase within the matrix of the cast iron, increases the formation of transformed ledeburites, austenitic dendrites and tempered graphite, which lead to increased machinability and ductility as well as to reduced hardness, and wear resistance when compared to non-heat treated samples.

Microstructure and Wear Properties of In Situ Production of (Fe,Cr)7C3 Particulate Bundles Reinforced Iron Matrix Composites

2013 ◽  
Vol 652-654 ◽  
pp. 64-68 ◽  
Author(s):  
Jing Lai Tian ◽  
Fang Xia Ye ◽  
Li Sheng Zhong ◽  
Yun Hua Xu
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Treatment Time ◽  
Heat Treatment Time ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Matrix Composites ◽  
Wear Properties ◽  
Iron Matrix

In-situ production of (Fe,Cr)7C3 particulate bundles-reinforced iron matrix composites were prepared by infiltration casting between Cr wires and white cast iron at 1200°C plus subsequent heat treatment. The composites prepared under different heat treatment time were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), macrohardness test and pin-on-disc wear resistance test. The results show that the composite is mainly consist of (Fe,Cr)7C3 carbides and γ-Fe. The area of the particulate bundles gradually increases with the increase of heat treatment time, the microstructure evolved from eutectic to hypoeutectic, and the morphologies of the reinforcements present chrysanthemum-shaped, granular and intercrystalline eutectics, respectively. The (Fe,Cr)7C3 particulate bundles reinforced composite has high macrohardness and excellent wear resistance under dry sliding wear testing conditons.

Technological Features of the Manufacture of Disk Working Bodies of Tillage and Seeding Machines

2020 ◽  
pp. 140-151
Author(s):  
Volodymyr Kropivny ◽  
◽  
Mykola Sviren ◽  
Olexandr Kuzyk ◽  
Volodymyr Amosov ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Hot Stamping ◽  
Experimental Studies ◽  
High Wear Resistance ◽  
Treatment Technology ◽  
Outer Contour ◽  
Heat Treatment Technology ◽  
Working Bodies ◽  
Hardness Values

The purpose of this study is to improve the technology of manufacturing spherical disk working bodies of tillage machines to increase their wear resistance and strength. The world's leading manufacturers achieve high wear resistance and strength of discs made of boron-containing steels both in their chemical composition and the choice of rational heat treatment technology. Experimental studies of 30MnB5 steel parts revealed that heating for 15 minutes to a temperature of 850°C and quenching in water was sufficient to achieve maximum hardness values. To prevent hardness reduction and to ensure the necessary elasticity and viscosity of the discs, it is recommended to temper at a temperature of 180°C and combine with heat before painting with powder paint. The application of cutting blanks with cutting of depressions along the outer contour of the disk and internal holes on the laser machine, as well as the formation of the finished shape of parts in the process of hot stamping and subsequent heat treatment in quenching dies. 1. The market of disk working bodies of tillage and sowing machines is studied, technological processes of manufacturing of which it is expedient to improve. 2. Theoretical and experimental study of the structure, structure and material properties of samples of spherical disks of imported agricultural machinery. The choice of 30MnB5 pine steel for their production is substantiated. 3. The improved technological process of manufacturing spherical disks is developed. It is recommended to form them by hot stamping in cold dies and intensive hardening in a water bath. 4. The project development of the section of production of disk working bodies of tillage and sowing equipment is carried out.

scholarly journals Effects of Nitride on the Tribological Properties of the Low Carbon Alloy Steel

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yuh-Ping Chang ◽  
Jin-Chi Wang ◽  
Jeng-Haur Horng ◽  
Li-Ming Chu ◽  
Yih-Chyun Hwang
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Alloy Steel ◽  
Tribological Properties ◽  
Wear Particles ◽  
Low Carbon ◽  
Low Friction ◽  
Treatment Technology ◽  
Surface Magnetization ◽  
Composite Heat

The technology of composite heat treatment is used popularly for low friction and wear resistance of drive elements. A large number of papers about the heat treatment technology had been proposed. Especially, the nitride treatment has been used widely for the purpose of wear resistance and low friction in the industry. Therefore, the self-developed vertical ball/disk friction tester with the measurement system was used to study the effects of nitride on the tribological properties of the low carbon alloy steel—SCM415— in this study. The experiments were conducted under dry and severe wear conditions. The variations of friction coefficient and surface magnetization were simultaneously recorded during dynamic friction process. After each test, the microstructures of the wear particles were observed and analyzed under a SEM, and the depth of wear track is measured by means of a surface tester. According to the experimental results, the wear resistance of the specimens with carburizing-nitride is significantly larger than the case of nitride-carburizing. Moreover, the surface magnetization was especially larger for the case of nitride-carburizing. As a result, the wear particles always stay in the interfaces and the wear mechanism becomes complex. Therefore, it is necessary to put nitride after carburizing for the composite heat treatments.

Research on Heat Treatment Influence Factors on High-Pressure Cylinder Steel 30CrMo-M

2010 ◽  
Vol 97-101 ◽  
pp. 771-776 ◽  
Author(s):  
Zhong Guo Huang ◽  
Hong Lei Dong ◽  
Qing Hua Yuan ◽  
Shun Yao Jin ◽  
Jia Fan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Chemical Composition ◽  
Wall Structure ◽  
Carbon Equivalent ◽  
Temper Brittleness ◽  
High Pressure Cylinder ◽  
Treatment Technology ◽  
Tempering Temperature ◽  
Pressure Cylinder

To increase comprehensive properties of cylinder steel, high-pressure cylinder steel 30CrMo-M was developed on the basis of steel 30CrMo. Tests and researches were made on factors which influence heat treatment properties, such as chemical composition, quenching temperature, and tempering temperature. The results indicated that the 30CrMo-M steel has stable chemical composition, its strength rises with increase of carbon equivalent, and thus it has better relativity. When concentration of quenching liquid is 5%, yield ratio of the steel can be guaranteed to be low, thus safety of cylinder is improved. Tempered between 570°C~622°C, the strength of the steel is increased and plasticity rises with increase of temperature. When tempered at 570°C, inner wall structure of cylinder contains tempering martensite, the strength is high but the plasticity is low. When tempered between 610°C~615°C, temper brittleness happens very easily and toughness is on the low side. The best heat treatment technology is: quenched at 930°C with temperature holding for 40 minutes and quenching liquid concentration as 5%, tempered at 580°C with temperature kept for 90 minutes. The microstructure treated by this technology is tempered sorbite with higher strength, plasticity and toughness.

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