Maschinelle Werkzeugoberflächenbearbeitung von ADI*/Mechanical treatment of ADI tools - Smoothing and hardening of austempered ductile iron

2016 ◽  
Vol 106 (10) ◽  
pp. 719-724
Author(s):  
P. Prof. Groche ◽  
P. Stein ◽  
M. Steitz ◽  
J. Scheil ◽  
C. Prof. Müller
Keyword(s):  
Surface Treatment ◽  
Ductile Iron ◽  
High Strength Steel ◽  
Mechanical Treatment ◽  
New Technologies ◽  
High Strength ◽  
Austempered Ductile Iron ◽  
Neue Technologien ◽  
Product Cycles ◽  
Short Time

Hochfeste Tiefziehstähle und kurze Produktzyklen erfordern immer kürzere Amortisationszeiten der Werkzeuge. Daher wurden in den letzten Jahren neue Technologien zur automatisierten Oberflächenbearbeitung entwickelt. In den vorliegenden Untersuchungen wurde das Optimierungspotenzial einer Kombination aus automatisierter Oberflächenbearbeitung und lastangepasstem Werkstoff, sogenanntem Austempered Ductile Iron (ADI), ermittelt.   High-strength steel for deep-drawn products as well as brief product cycles require short time-to-values of tools. Thus, new technologies for automated surface treatments have been developed in the last years. Within the scope of the presented investigations, the potential for optimization of a combination of automated surface treatment and load-adjusted materials such as Austempered Ductile Iron (ADI) is examined.

scholarly journals Contact Fatigue Strength of Austempered Ductile Iron (ADI) in Gear Applications

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1147
Author(s):  
Fabian Goergen ◽  
Dieter Mevissen ◽  
Stefano Masaggia ◽  
Enrico Veneri ◽  
Jens Brimmers ◽  
...  
Keyword(s):  
Ductile Iron ◽  
Fatigue Behavior ◽  
Contact Fatigue ◽  
Austempered Ductile Iron ◽  
Specific Point ◽  
Iron And Steel ◽  
Contact Fatigue Strength ◽  
Steel Castings ◽  
Short Time ◽  
Internal Gear

Austempered Ductile Iron (ADI) is widely implemented to achieve lightweight and optimized components in power transmissions (e.g., internal gear in planetary stages), by substituting steel castings or a combination of Ductile Iron and steel-assembled structures. In this paper, the contact fatigue of two ADI grades (ADI J/S900-8; ADI J/S1200-3) is investigated by disk-on-disk tests. The disk-on-disk contact is an analogy model of the tooth contact and represents the tribological conditions at a specific point on the path of contact. The experimental results cover the endurance limit as well as the short time fatigue behavior for both ADI variants. In addition, the pitting characteristics and microstructural changes are analyzed in order to get a further understanding of the fatigue behavior of ADI.

Turning of Austempered Ductile Iron with ceramic tools

2020 ◽  
pp. 095440542095715 ◽  
Author(s):  
A Fernández-Valdivielso ◽  
LN López de Lacalle ◽  
P Fernández-Lucio ◽  
H González
Keyword(s):  
Heat Treatment ◽  
Tool Wear ◽  
Ductile Iron ◽  
High Strength ◽  
Cutting Parameters ◽  
Precise Determination ◽  
Machining Process ◽  
Austempered Ductile Iron ◽  
Machining Time ◽  
Ceramic Tools

Austempered ductile iron castings (ADI) are characterized by the high strength and resistance to fatigue, impact, and wear. ADI mechanical properties are obtained by performing a heat treatment on ductile iron casting. Thus, the so-called ausferrite microstructure is achieved. However, heat treatment significantly affects ductile casting machinability. A precise determination of ADI microstructure, on the one hand, and to choose correct machining process parameters and tool wear control on the other, are essential to optimize cutting processes and for the introduction of ceramic inserts. Ceramics are an alternative to carbide tools. In this paper, ceramic tools for the dry turning of ADI castings are studied. Thus, different technical ceramics were analyzed, identifying the dominant wear mechanism and evolution. Tool wear rate magnitude was determined indirectly by the variation of cutting force along machining time. Finally, different tests helped to study ceramics wear sensitivity with respect to cutting parameters. Mixed ceramics of Al2O3 with TiC showed the best performance, followed by SiAlON ones.

A Comparative Assessment of Austempered Ductile Iron as a Substitute in Weight Reduction Applications

2008 ◽  
Author(s):  
Ashwin Polishetty ◽  
Sarat Singamneni ◽  
Guy Littlefair
Keyword(s):  
Ductile Iron ◽  
High Performance ◽  
Material Selection ◽  
Weight Ratio ◽  
Cost Savings ◽  
High Strength ◽  
Good Choice ◽  
Comparative Assessment ◽  
Austempered Ductile Iron ◽  
Machining Characteristics

Manufacturing engineering has had to undergo drastic changes in the approach to material selection in order to meet new design challenges. In the automotive industry, researchers in their effort to reduce emissions and satisfy environmental regulations, have shifted their focus to new emerging materials such as high-strength aluminium alloys, metal matrix composites, plastics, polymers and of late, Austempered Ductile Iron (ADI). ADI is a good choice for design where the criterion is high performance at reduced weight and cost. The unique, ausferrite microstructure gives the material desirable material properties and an edge over other materials. A comparative study of ADI in terms of materials properties and machining characteristics with other materials is desirable to highlight the potential of the material. This paper focuses on a comparative assessment of material and machining characteristics of ADI for different applications. The properties under consideration are machinability, weight and cost savings and versatility. ADI has a higher strength-to-weight ratio than aluminium making it a ready alternative for material selection. In terms of machinability, there are some problems associated with machining of ADI due to its work hardening nature. This paper attempts to identify the possible potential applications of ADI, by critically reviewing specific applications such as machinability, overall economics and service.

DOGAL 500DP

Alloy Digest ◽  
2010 ◽  
Vol 59 (11) ◽  
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Strength Steel ◽  
High Strength

Abstract Dogal 500DP is a high strength steel with a microstructure that contains ferrite, which is soft and formable, and martensite, which is hard and contributes to the strength of the steel. The designation relates to the lowest tensile strength. This datasheet provides information on composition and physical properties. It also includes information on forming, joining, and surface treatment. Filing Code: CS-159. Producer or source: SSAB Swedish Steel Inc. and SSAB Swedish Steel.

Features for formation of structure and properties of highstrength steel 30KhGSN2A in production of liquid dampers

2020 ◽  
pp. 223-230
Author(s):  
V.S. Muratov ◽  
N.S. Yakimov
Keyword(s):  
Heat Treatment ◽  
Surface Treatment ◽  
High Strength Steel ◽  
High Strength ◽  
Structure And Properties ◽  
Reliable Operation ◽  
Premature Failure ◽  
Liquid Dampers ◽  
Steel Properties

The causes of premature failure of liquid dampers made of high-strength steel 30KhGSN2A and used on vehicles are studied. Recommendations are developed on adjusting the modes of fi nishing heat treatment of barrels and surface treatment of rods, providing improved microstructure and the required level of steel properties, as well as reliable operation of the dampers.

scholarly journals The Effect of Cu and Mo on Mechanical Properties and Corrosion Resistance of Austempered Ductile Iron

MESIN ◽  
2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Sulardjaka Sulardjaka ◽  
Yusuf Umardani ◽  
Agus Suprihanto
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Ductile Iron ◽  
Brinell Hardness ◽  
High Strength ◽  
Hardness Test ◽  
Salt Bath ◽  
Austempered Ductile Iron ◽  
Immersion Corrosion ◽  
Mechanical Properties And Corrosion

The metal casting is the most economical manufacturing process. It can make products with complex geometries in one process. Austempered Ductile Iron (ADI) is a cast iron product that has high prospects for application, because ADI has a high strength closed to forged iron. The purpose of this study is to investigate the effect of addition of Cu and Mo on mechanical properties and corrosion resistance of ADI. Cu is added with percentages of 0.5 and 1% by weight, while Mo is added by percentages of 0.3 and 0.6% by weight. The austempering process is conducted on salt bath temperture 350 <sup>o</sup>C for 4 hours. The results of the process were characterized by hardness test, tensile test and corrosion resistance. Hardness and tensile strength of ADI were tested by Brinell hardness test based on ASTM E10 and ASTM E8 repectively. Corrosion resistance of ADI was tested by immersion corrosion testing based on ASTM G31 standard.  The results of this study indicate that the addition of Cu element significantly increases the strength of ADI. The addition of Mo element inhibits graphite nodularity and not significantly increases the mechanical properties. Addition of Mo increases corrosion resistance due the amount of retained austenite.

DOGAL 1000 DPX

Alloy Digest ◽  
2011 ◽  
Vol 60 (4) ◽  
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
High Strength Steel ◽  
High Strength

Abstract Dogal 1000 DPX is a high strength steel with a microstructure that contains ferrite, which is soft and formable, and martensite, which is hard and contributes to the strength of the steel. The designation relates to the lowest tensile strength. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming, joining, and surface treatment. Filing Code: CS-163. Producer or source: SSAB Swedish Steel Inc..

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