Application Experiences in Powder Compaction of Iron Powder - Influence of Tool Material on Tool Life

2007 ◽  
Vol 534-536 ◽  
pp. 649-652
Author(s):  
Odd Sandberg ◽  
Andreas Krona ◽  
Sigurd Berg ◽  
Flemming Kaad ◽  
Göran Nord
Keyword(s):  
Tool Life ◽  
Tool Steel ◽  
Compaction Pressure ◽  
Tool Material ◽  
High Hardness ◽  
Full Potential ◽  
Tool Steels ◽  
Low Friction ◽  
Powder Pressing ◽  
Type Size

Tool steels for powder pressing are normally heat treated to a high hardness to counteract plastic deformation during the compacting process. Ductility and wear resistance of the die punch or core rod are determined by the type, size, amount, hardness and distribution of the hard phase in the martensitic matrix. Thus, tool steels can be designed and optimized for specific powder pressing application. To be able to utilize the full potential of the tool steel, also the design, heat treatment and eventual surface coating of the steel must be taken into account. In this paper new low-friction tool steel is investigated in PM manufacturing for a number of applications. An increase of tool life of more than two times compared to ordinary tool steels is found. Furthermore, the new low friction tool steel shows a potential for sintered parts with higher densities through the applicability of increased compaction pressure or minimized lubricant amount.

Trial on C3N4 Coating Cutter Hard-Dry Cutting on Hardened Steel

2010 ◽  
Vol 33 ◽  
pp. 483-486
Author(s):  
Hai Dong Yang ◽  
Xi Quan Xia ◽  
Zhen Hua Qing
Keyword(s):  
Thermal Conductivity ◽  
Wear Resistance ◽  
Friction Coefficient ◽  
Tool Material ◽  
High Hardness ◽  
Hardened Steel ◽  
Hard Material ◽  
Low Friction ◽  
Dry Cutting ◽  
Coated Tool

The method of “cutting instead of grinding” on hardened steel is always attractive to engineers. To gain this aim the tool material must first be found. C3N4 is a new kind of super hard material and has comparable properties with diamond in high hardness, wear-resistance, low friction coefficient and thermal conductivity. A number of dry-cutting tests were carried out by C3N4-film coated tool on hardened steel, proved the coating tool is suitable for hard dry cutting.

Blade processing of hardened materials. Part 2. Control of processing of high-hard tool steel X12M with surfacing

2021 ◽  
pp. 452-454
Author(s):  
B.Ya. Mokritsky ◽  
E.B. Mokritskaya
Keyword(s):  
Acoustic Emission ◽  
Tool Steel ◽  
High Hardness ◽  
Structural Steels ◽  
Dynamic Parameters ◽  
Tool Steels ◽  
Sandwich Type ◽  
End Mills ◽  
Cutting System

The possibilities of processing materials with hardness up to 65 HRC with carbide end mills are shown. Examples of milling hardened tool steels and sandwich-type materials based on structural steels with high-hardness surfacing are given. The results of the use various types and brands of tools are considered. A method for controlling the dynamic parameters of a cutting system for high-hardness materials based on controlled acoustic emission is described.

Steels as Materials for Sonotrode Tools

2014 ◽  
Vol 601 ◽  
pp. 21-24
Author(s):  
Jaroslav Kováčik ◽  
Štefan Emmer
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Aluminum Alloy ◽  
Tool Material ◽  
High Hardness ◽  
7075 Aluminum Alloy ◽  
Tool Steels ◽  
Ultrasound Energy ◽  
Titanium Alloy Ti6al4v ◽  
Better Than

The investigation of suitable steels for sonotrode tool applications was performed. In this case in addition to good sonotrode properties (good transmission of ultrasonic energy, resistance to gigacycle fatigue) the material ought to meet also the tool properties (high hardness and wear resistance). The study was focused on tool steels, which are relatively cheaper than the currently best sonotrode tool material FerroTitanit cermet, and better than usual sonotrode materials AW 7075 aluminum alloy and titanium alloy Ti6Al4V. The suitability of steels for this purpose was evaluated by measuring the ultrasound energy transmission at a frequency of 30 kHz.

CYCLOPS 62

Alloy Digest ◽  
1966 ◽  
Vol 15 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Physical Properties ◽  
Tensile Properties ◽  
Tool Steel ◽  
Cold Work ◽  
High Hardness ◽  
Heat Treating ◽  
High Tempering

Abstract Cyclops 62 is an air-hardening tool steel with exceptional resistance to softening when tempering. It is recommended for cold work applications where high hardness after high tempering temperatures is a requirement. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-181. Producer or source: Cyclops Corporation.

TLS A6

Alloy Digest ◽  
2006 ◽  
Vol 55 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Low Temperatures ◽  
Heat Treating ◽  
Tool Steels

Abstract TLS A6 is a medium-alloy air-hardening tool steel that is known for its through hardening at the low temperatures typically used with oil-hardening tool steels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on wear resistance as well as heat treating and machining. Filing Code: TS-638. Producer or source: Timken Latrobe Steel.

LUKENS TOOL STEELS

Alloy Digest ◽  
1997 ◽  
Vol 46 (2) ◽  
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Tool Steels ◽  
Steel Company ◽  
Full Size ◽  
Heat Treated

Abstract Lukens cold-work tool steels A2, D2, O1, S5, and S7 are used in applications where an air-hardening, oil-hardening, or shock-resisting tool steel is required. These steels are available in full-size, annealed plates suitable for saw cutting and/or finishing. Parts can subsequently be machined and heat treated to a range of hardness requirements. For improved internal cleanliness, all Lukens cold-work tool steels are produced with maximum sulfur levels of 0.010%. This datasheet provides information on composition. It also includes information on machining and joining. Filing Code: TS-550. Producer or source: Lukens Steel Company.

Prediction of suitable heat treatment for H13 tool steels by application of thermal shock fatigue cycle

2021 ◽  
pp. 135065012110118
Author(s):  
Palani Karthikeyan ◽  
Sumit Pramanik
Keyword(s):  
Heat Treatment ◽  
Crack Initiation ◽  
Thermal Shock ◽  
Tool Steel ◽  
Treatment Method ◽  
Industrial Applications ◽  
Tool Steels ◽  
H13 Steel ◽  
H13 Tool Steel ◽  
Cyclic Treatment

In industry, thermally shocked components lead to early failures and unexpected breakdowns during production resulting in huge losses in profit. Thus, the present study investigates the as-received, hardened and hardened and nitrogen treated H13 tool steels subjected to a thermal shock gradient similar to the actual industrial applications. The thermal shock gradients were created by using an in-house-built thermal shock fatigue cyclic treatment machine. The effect of thermal shock fatigue cyclic treatments at 1000 and 2000 thermal shock cycles in hot and molten metal chambers was noticed. All the thermal shock fatigue cyclic-treated samples were analysed by hardness, X-ray diffraction, microscopy and magnetic tests. The interesting changes in hardness, distorted crystal structure and crack initiation were found to be different for differently treated H13 tool steel specimens. The molten aluminium was more prone to stick to the surface of as-received as well as hardened and nitrogen treated steel compared to the hardened H13 steel specimens, which would delay the crack initiation. The wear resistance properties of the hardened H13 steel specimens were found to be higher than as-received and hardened and nitrogen treated H13 steel specimens after thermal shock fatigue cyclic treatment. The loss in magnetic properties was significant for the hardened and hardened and nitrogen treated samples compared to as-received H13 tool steel specimens. Therefore, the present 1000 and 2000 thermal fatigue cycles for 30 s at 670 °C would be worthy to predict the proper heat treatment method to design the parameters as well as the life of die-casting components and to help in the economical production of casting.

scholarly journals Performance of Al2O3 nanofluids in minimum quantity lubrication in hard milling of 60Si2Mn steel using cemented carbide tools

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401771061 ◽  
Author(s):  
Duc Tran Minh ◽  
Long Tran The ◽  
Ngoc Tran Bao
Keyword(s):  
Surface Roughness ◽  
Tool Life ◽  
Minimum Quantity Lubrication ◽  
High Hardness ◽  
Cemented Carbide ◽  
Cutting Fluid ◽  
Hard Milling ◽  
Minimum Quantity ◽  
Coated Carbide ◽  
Lubrication Conditions

In this article, an attempt has been made to explore the potential performance of Al2O3 nanoparticle–based cutting fluid in hard milling of hardened 60Si2Mn steel (50-52 HRC) under different minimum quantity lubrication conditions. The comparison of hard milling under minimum quantity lubrication conditions is done between pure cutting fluids and nanofluids (in terms of surface roughness, cutting force, tool wear, and tool life). Hard milling under minimum quantity lubrication conditions with nanofluid Al2O3 of 0.5% volume has shown superior results. The improvement in tool life almost 177%–230% (depending on the type of nanofluid) and the reduction in surface roughness and cutting forces almost 35%–60% have been observed under minimum quantity lubrication with Al2O3 nanofluids due to better tribological behavior as well as cooling and lubricating effects. The most outstanding result is that the uncoated cemented carbide insert can be effectively used in machining high-hardness steels (>50 HRC) while maintaining long tool life and good surface integrity (Ra = 0.08–0.35 µm; Rz = 0.5–2.0 µm, equivalent to finish grinding) rather than using the costlier tools like coated carbide, ceramic, and (P)CBN. Therefore, using hard nanoparticle–reinforced cutting fluid under minimum quantity lubrication conditions in practical manufacturing becomes very promising.

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