Repairing parts from nickel base material alloy by laser cladding and ball end milling

Böß, Volker; Denkena, Berend; Wesling, Volker; Kaierle, Stefan; Rust, Felix; Nespor, D.; Rottwinkel, Boris

doi:10.1007/s11740-016-0690-7

Cited by 19 publications

(2 citation statements)

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“…Fig. 8a, F r,max = F r,max (peak) N peak and F r,m = A F r t e (peak) N peak (2) taking in to account the amount of cutting edge engagements N peak . Hence, the area under the force peaks A Fr was divided by the true engagement time t e of the cutting edge (width of the force peaks) disregarding the time with no engagement of the tool t n during the time of tool rotation t r for the complete measured data set.…”

Section: Machining Processmentioning

confidence: 99%

“…In addition, most applications require particularly high dimensional accuracy and integrity of the component surfaces due to safety, cost and technological aspects. For the repair and manufacture of highly stressed, cost-intensive components, additive and machining manufacturing steps can be used in a complementary manner as it is discussed in [2]. The focus is particularly on cost-intensive materials for high-temperature applications such as NiCrMo alloys.…”

Section: Introductionmentioning

confidence: 99%

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Surface finishing of hard-to-machine cladding alloys for highly stressed components

Schroepfer

Treutler

Boerner

et al. 2021

Int J Adv Manuf Technol

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The supply and processing of materials for highly stressed components are usually cost-intensive. Efforts to achieve cost and resource efficiency lead to more complex structures and contours. Additive manufacturing steps for component repair and production offer significant economic advantages. Machining needs to be coordinated with additive manufacturing steps in a complementary way to produce functional surfaces suitable for the demands. Regarding inhomogeneity and anisotropy of the microstructure and properties as well as production-related stresses, a great deal of knowledge is still required for efficient use by small- and medium-size enterprises, especially for the interactions of subsequent machining of these difficult-to-machine materials. Therefore, investigations on these influences and interactions were carried out using a highly innovative cost-intensive NiCrMo alloy (IN725). These alloys are applied for claddings as well as for additive component manufacturing and repair welding using gas metal arc welding processes. For the welded specimens, the adequate solidification morphology, microstructure and property profile were investigated. The machinability in terms of finishing milling of the welded surfaces and comparative analyses for ultrasonic-assisted milling processes was examined focussing on surface integrity. It was shown that appropriate cutting parameters and superimposed oscillating of the milling tool in the direction of the tool rotation significantly reduce the mechanical loads for tool and workpiece surface. This contributes to ensure a high surface integrity, especially when cutting has to be carried out without cooling lubricants.

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Section: Machining Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%