Contact Us

C o n t a c t U s

Hard Turning as an Alternative to Grinding Production

2010-1-22  Editor Emeritus, Production Machining. Hard turning is typically defined as the turning of a part or barstock of harder than 45HRC on a lathe or turning center. Since surface roughness of Rmax/Rz=1.6s can be achieved, hard turning is often considered a replacement for grinding operations or as a pre-grinding

Hard Turning Versus Grinding Production Machining

2013-2-14  Hard Turning Versus Grinding. Lori Beckman. Senior Editor, Production Machining. Hard turning is often considered a replacement for grinding operations or as a pre-grinding process. It is most often performed on post-heat treated parts with surface hardness ranging from 45 HRC to 68 HRC or higher. Grinding, however, achieves higher tolerances

Why hard turning can be an alternative to grinding for

2021-3-1  Why hard turning can be an alternative to grinding for many applications March 1, 2021 Grinding Before developing high precision hard turning machines, grinding was the preferred method for producing workpieces with very high tolerances.

Hard Turning vs. Grinding: What are the Facts?

2021-9-12  Hard turning is simply defined as turning a part or barstock harder than 45 HRC on a lathe or turning center. Since surface roughness of Rz = 1.6s can be achieved, this can be viewed as a viable alternative to grinding. Let's take a look at the advantages grinding has over hard turning. First, grinding

Hard Turning’s Strong Finish Production Machining

2013-12-16  Hard Turning’s Strong Finish. With the right methodology in place, this alternative to grinding can often save money while adequately meeting surface finish requirements. The key machining components for successful hard turning are rigidity, thermal stability and high accuracy. The right machine and tooling setup for hard turning

Electro-discharge machining (EDM) versus hard turning

2008-1-1  1.. IntroductionTraditionally, the machining of quenched steels was performed with grinding wheels due to the elevated hardness of the parts. Hard turning appeared as an alternative to grinding when polycrystalline cubic boron nitride (pCBN) tools started to be commercialized at competitive prices.

Tooling Up For Hard Turning Production Machining

2005-12-20  Grinding will always have its role in metalworking, but the idea behind hard turning is an alternative to the investment in capital equipment and skills associated with the process. A turning shop that can use hard turning as an extension of soft turning, in the right applications, can perform more value-added service to its customers.

Getting the Most Out of Hard Turning Production

2011-1-21  Compared with grinding, hard part turning provides the advantage of allowing much more machining to be completed in a single setup. Traditionally, production of most parts made from hard or hardened materials, defined as those at or more than 45 HRc, required dedicated grinding

Turn-Milling of Hardened Steel an Alternative to Turning

1994-1-1  Turn-Milling of Hardened Steel an Alternative to Turning H. Schulz (l), T. Kneisel, Technical University of Darrnstadt, Germany Received on January 5,1994 Abstract: Turn-milling with parallel axes is a relatively new method for precision machining of rotationally symmetrical workpieces.

Why hard turning can be an alternative to grinding for

2021-3-1  Why hard turning can be an alternative to grinding for many applications March 1, 2021 Grinding Before developing high precision hard turning machines, grinding was the preferred method for producing workpieces with very high tolerances.

Hard Turning as an Alternative to Grinding AZoM

2021-5-16  Faster Set-Up and Cycle Times Hard turning can speed up production cycles at the same time as minimizing machine downtime, thanks to its qualities of having a faster machine set-up and metal removal rates typically 3-6 times faster than grinding. Hard turning production cycles are also shortened by shorter part loading and unloading times.

Hard Turning vs. Grinding: What are the Facts? Indiana

2021-1-21  Hard turning is simply defined as turning a part or bar stock harder than 45 HRC on a lathe or turning center. Since surface roughness of Rz = 1.6s can be achieved, this can be viewed as a viable alternative to grinding. Let’s take a look at the advantages grinding has over hard turning. First, grinding

The hard turning process in detail Hembrug Machine Tools

2021-9-15  Finish hard turning has established itself as a powerful alternative to grinding particularly for workpieces with complex shapes in a low- mid volume production environment. Benefits of finish hard turning with a high precision turning lathe Complete machining of

Electro-discharge machining (EDM) versus hard turning

In this work, the surface integrity generated in AISI O1 tool steel by wire electro-discharge machining, hard turning and production grinding is studied and compared. Production grinding generates compressive stresses at the surface, and a slight tensile peak, accompanied by a decrease in hardness beneath it. No structural changes are noticeable.

Electro-discharge machining (EDM) versus hard turning

2008-1-1  1.. IntroductionTraditionally, the machining of quenched steels was performed with grinding wheels due to the elevated hardness of the parts. Hard turning appeared as an alternative to grinding when polycrystalline cubic boron nitride (pCBN) tools started to be commercialized at competitive prices.

An Alternate Machining Method for Hardened Automotive

2018-1-1  This paper describes an experimental investigation on hard turning of disc type automotive gears made of 20Mn5Cr5 steel hardened to 60±2 HRC against grinding process. Experiments are conducted by using PCBN tools on a CNC turning centre without using coolant. The effect of machining parameters; cutting speed ( vc ), feed rate ( f) and depth of

Turn-Milling of Hardened Steel an Alternative to Turning

1994-1-1  Turn-Milling of Hardened Steel an Alternative to Turning H. Schulz (l), T. Kneisel, Technical University of Darrnstadt, Germany Received on January 5,1994 Abstract: Turn-milling with parallel axes is a relatively new method for precision machining of rotationally symmetrical workpieces.

Cutting of Hardened Steel ResearchGate

In the last decades, hard turning is used as an alternative method to the grinding operation due to its superior properties such as shorter machining time, good surface finish, machining without

Everything about hard turning Hembrug Machine Tools

2021-9-2  Finish hard turning refers to the process of machining hardened steel with a single-point insert within a hardness range of 55 to 70 HRC. With finish hard turning, workpiece dimensional tolerances of 2 microns or less is possible eliminating the need for any additional operations. In order to achieve the full potential of finish hard turning

Hard Turning as an Alternative to Grinding AZoM

2021-5-16  Faster Set-Up and Cycle Times Hard turning can speed up production cycles at the same time as minimizing machine downtime, thanks to its qualities of having a faster machine set-up and metal removal rates typically 3-6 times faster than grinding. Hard turning production cycles are also shortened by shorter part loading and unloading times.

Electro-discharge machining (EDM) versus hard turning

In this work, the surface integrity generated in AISI O1 tool steel by wire electro-discharge machining, hard turning and production grinding is studied and compared. Production grinding generates compressive stresses at the surface, and a slight tensile peak, accompanied by a decrease in hardness beneath it. No structural changes are noticeable.

Hard Turning Fitzpatrick Manufacturing Co.

2021-8-9  Hard Turning. Because of our deep knowledge and experience with advanced cutting tools, our team can hard turn materials up to 60 HRC. This advanced processing eliminates expensive post-processing finishing operations such as grinding. We are also able to apply this technique to other aspects of turning such as boring, turning, and facing.

Soft Turning Is Key To Hard Turning Modern Machine Shop

1996-9-1  Like some grinding operations, hard turning is used to finish a workpiece that has been heat treated. Hard turning allows a shop to turn, heat treat and then hard turn to final size and surface finish specifications. Most contemporary CNC lathes are capable of hard turning so shops conceivably can soft and hard turn

An Alternate Machining Method for Hardened Automotive

2018-1-1  This paper describes an experimental investigation on hard turning of disc type automotive gears made of 20Mn5Cr5 steel hardened to 60±2 HRC against grinding process. Experiments are conducted by using PCBN tools on a CNC turning centre without using coolant. The effect of machining parameters; cutting speed ( vc ), feed rate ( f) and depth of

Hard Machining Hirschvogel

Hard Turning. Flexible production; Various profile shapes may be produced; Highlights. Cost-efficient alternative to grinding; Ready-for-assembly dimensions may be produced; Targeted

Surface Hardening: Hard Turning or Grinding? Gear

2007-10-1  Hard turning and grinding are competing finishing processes for the manufacture of precision mechanical components such as bearings, gears, cams, etc. Surface hardening at gentle machining conditions has often been reported and is attributed to strain/strain rate hardening and size effect.

Everything about hard turning Hembrug Machine Tools

2021-9-2  Finish hard turning refers to the process of machining hardened steel with a single-point insert within a hardness range of 55 to 70 HRC. With finish hard turning, workpiece dimensional tolerances of 2 microns or less is possible eliminating the need for any additional operations. In order to achieve the full potential of finish hard turning

The influence of cutting parameters on residual stresses

2006-5-25  Obviously, hard turning is an interesting alternative to grinding operations under specific circumstances. The quality criteria consist of workpiece quality, process reliability and surface integrity. All three aspects of quality have to be considered in order to successfully implement hard turning. Download : Download full-size image; Fig. 1.

(PDF) Surface roughness analyses on hard martensitic

2008-2-1  super hard cutting tools offer manufacturers an alternative to . of reducing production time and costs by machining hard materials. Assisted Machining in milling, turning, grinding