Study on Precision Forging Methods of Difficult-to-Knockout Components with Non-parallel Internal Grooves

2021 ◽  
pp. 2167-2178
Author(s):  
Luyi Han ◽  
Guangchun Wang ◽  
Xin Wang ◽  
Zhao Liu
Keyword(s):  
Precision Forging

Group session B. Precision forging

1961 ◽  
Vol 40 (6) ◽  
pp. 416
Author(s):  
I.B. King
Keyword(s):  
Group Session ◽  
Precision Forging

scholarly journals Microstructure control of ferrous driven part fabricated by warm precision forging

2018 ◽  
Vol 15 ◽  
pp. 404-410 ◽  
Author(s):  
Youngseon Lee ◽  
Eunyoo Yoon ◽  
Taedoo Nho ◽  
Younghoon Moon
Keyword(s):  
Microstructure Control ◽  
Precision Forging

Study on Cold Precision Forging of Non Straight Wall Cavity Piston

2011 ◽  
Vol 311-313 ◽  
pp. 2348-2352
Author(s):  
Ming Ming Ding ◽  
Ju Chen Xia ◽  
Lei Deng ◽  
Jun Song Jin
Keyword(s):  
Element Model ◽  
Cold Extrusion ◽  
Forming Process ◽  
Rigid Plastic ◽  
Precision Forging ◽  
Straight Wall ◽  
Cold Precision Forging ◽  
Overall Performance ◽  
Traditional Processing ◽  
Machine Processing

Brake piston is a huge demand non straight wall cavity part for the typical automotive industry; the traditional processing method is machine processing, or preforming by cold extrusion, and then machining. In this paper, the combined cold precision forging method of cold extrusion and spinning was proposed, which might improve the overall performance of parts and reduce costs. The rigid plastic finite element model of cold extrusion and spinning was established to simulate the forming process. The results showed that the combined cold precision forging method was available to manufacture non-straight wall cavity piston.

An expert system for designing precision forging diesf

1990 ◽  
Vol 28 (5) ◽  
pp. 943-951 ◽  
Author(s):  
SHU-CHUN WANG ◽  
JIANG CHEN
Keyword(s):  
Expert System ◽  
Precision Forging

scholarly journals A review of force reduction methods in precision forging axisymmetric shapes

2018 ◽  
Vol 97 (5-8) ◽  
pp. 2809-2833 ◽  
Author(s):  
Denis J. Politis ◽  
Nicholas J. Politis ◽  
Jianguo Lin ◽  
Trevor A. Dean
Keyword(s):  
Precision Forging ◽  
Reduction Methods ◽  
Force Reduction

scholarly journals Optimization of process parameters in the RF-DC plasma N2-H2 for AISI420 molds and dies

2019 ◽  
Author(s):  
Hengky Herdianto ◽  
Dionisius Johanes Djoko Herry Santjojo ◽  
Masruroh
Keyword(s):  
Process Parameters ◽  
Substrate Surface ◽  
Xrd Analysis ◽  
Iron Nitrides ◽  
Dc Plasma ◽  
Precision Forging ◽  
Optimization Of Process Parameters ◽  
Dc Bias ◽  
Substrate Surfaces

The RF-DC plasma N2-H2 was used to make precise AISI420 molds and dies have complex textured geometry. The quality of the molds and dies directly affect the quality of the produced parts. The excellent examples of molds were used for injection molding lenses and dies used for the precision forging of automotive drive train components. In this study, a temperature, DC bias, and duration as process parameters of the RF-DC plasma N2-H2 have been optimized for molds and dies fabrication. The mask-less micro-patterned method was utilized to draw the initial 2D micro patterns directly onto the AISI420 substrate surface. The unprinted substrate surfaces were selectively nitrided by the RF-DC plasma N2-H2 at 673 K for 5400 s by 70 Pa with hollow cathode device. Energy Dispersive X-ray was utilized to describe the nitrogen content distribution at the vicinity of the border between the unprinted surfaces. This exclusive nitrogen mapping proves that only the unprinted parts of the substrate have high content nitrogen solutes. XRD analysis was performed to investigate whether the iron nitrides were precipitated by RF-DC plasma N2-H2 in the AISI420.

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