Study on Diffusive Wear and Hardness of Driller of Machining Deep Hole in Sheet

2013 ◽  
Vol 457-458 ◽  
pp. 514-517 ◽  
Author(s):  
Xiao Cun Xu ◽  
Qiu Li Ning ◽  
Hui Qiu ◽  
Wen Bin Zheng ◽  
Bing Lin ◽  
...  
Keyword(s):  
Spectrum Analysis ◽  
Thin Sheet ◽  
Energy Dispersive Spectrum ◽  
Processing Technology ◽  
Energy Dispersive ◽  
Machining Parameters ◽  
Deep Hole ◽  
Friction Heat ◽  
Study Results ◽  
Thin Sheet Metal

The processing technology of machining deep hole in thin sheet is a kind of process using friction between driller and workpiece and plasticity of workpiece to form hole. The process is a kind of green mechanical processing technology. Studying green processing process in mechanical is becoming a development direction. In this paper, the new technological process to form deep hole on relative thin panel by friction heat not only saves material, but also saves man-hours, and the workpiece has a good piece of assembly. Because the processing technic is belong to local thermal processing, the diffusive wear and hardness of cemented carbide driller are studied by energy dispersive spectrum analysis energy dispersive spectrum analysis in this paper. The study results are useful to improve the life of driller and look for more appropriate machining parameters, and laid a foundation for further research on forming deep holes process on thin sheet metal by friction heat.

Simulation about Machining Deep Hole in Sheet

2014 ◽  
Vol 556-562 ◽  
pp. 1017-1020
Author(s):  
Xiao Cun Xu ◽  
Fei Guo ◽  
Feng Qiu ◽  
Xiang Kai Xin
Keyword(s):  
Thin Sheet ◽  
Processing Technology ◽  
Machining Parameters ◽  
Deep Hole ◽  
Forming Process ◽  
Forming Simulation ◽  
Friction Heat ◽  
Study Results ◽  
Development Direction ◽  
Thin Sheet Metal

It is becoming a development direction to study green forming process in mechanical. The processing technology of machining deep hole in relative thin sheet is a kind of green mechanical processing technology in this paper. The process uses the friction between driller and workpiece and plasticity of workpiece to form hole. The new technological process not only saves material, but also saves man-hours, and the workpiece has a good piece of assembly. In this paper, the forming process of deep hole on thin sheet was simulated, and some effect factors of forming hole were studied, such as the stress, temperature and shape of forming area, etc. The forming simulation is proved to be feasible by the test in this paper. The study results are useful to improve the machining parameters, and laid a foundation for further research on forming deep holes process on thin sheet metal by friction heat.

Study on Microstructure and Performance of Heat Affected Zone about Friction Forming Hole

2012 ◽  
Vol 201-202 ◽  
pp. 1117-1120
Author(s):  
Xiao Cun Xu ◽  
Xiao Liang Fu ◽  
Shu Wen Zhang ◽  
Feng Qiu ◽  
Fang Hui Liu
Keyword(s):  
Sheet Metal ◽  
Heat Affected Zone ◽  
Thin Sheet ◽  
Machining Parameters ◽  
Friction Heat ◽  
Mechanical Field ◽  
Green Processing ◽  
Study Results ◽  
Thin Sheet Metal ◽  
And Performance

With equipment renewal of machining and people's demand on the green environmental protection sustainable development, green processing technology of mechanical processing process in mechanical field is becoming a development direction. The traditional method of processing hole removes a part of the general hole sheet metal, so that the depth of the hole is equal with the thickness of the board. In this paper, the new technological process to form deep hole on relative thin panel by friction heat not only saves material, but also saves man-hours, and the workpiece has a good piece of assembly. Because the processing technic is belong to local thermal processing, the microstructure and property (hardness) of heat affected zone are studied in this paper. The study results are useful to look for more appropriate machining parameters, and laid a foundation for further research on forming deep holes process on thin sheet metal by friction heat.

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal

Characterisation of the plane anisotropy and its effect on interstitial free steel thin sheet metal forming simulation

2021 ◽  
pp. 146442072110534
Author(s):  
Latifa Arfaoui ◽  
Amel Samet ◽  
Amna Znaidi
Keyword(s):  
Thin Sheet ◽  
Rolling Direction ◽  
Tensile Tests ◽  
Interstitial Free ◽  
Experimental Database ◽  
Forming Simulation ◽  
Hardening Law ◽  
Tension Tests ◽  
Interstitial Free Steel ◽  
Thin Sheet Metal

The main purpose of this paper is to study the orthotropic plastic behaviour of the cold-rolled interstitial free steel HC260Y when it is submitted to various loading directions under monotonic tests. The experimental database included tensile tests carried out on specimens (in the as-received condition and after undergoing an annealing heat treatment) cut in different orientations according to the rolling direction. A model was proposed, depending on a plasticity criterion, a hardening law and an evolution law, which takes into account the anisotropy of the material. To validate the proposed identification strategy, a comparison with the experimental results of the planar tension tests, carried out on specimens cut parallel to the rolling direction, was considered. The obtained results allowed the prediction of the behaviour of this material when it is subjected to other solicitations whether simple or compound.

Research on Deep-hole Drilling Quality of High-strength Steel With Slender Gun Drill

2021 ◽  
Author(s):  
Jiabin Liang ◽  
Li Jiao ◽  
Pei Yan ◽  
Minghui Cheng ◽  
Tianyang Qiu ◽  
...  
Keyword(s):  
Cutting Force ◽  
High Strength Steel ◽  
Fluid Pressure ◽  
Cutting Speed ◽  
High Strength ◽  
Feed Speed ◽  
Machining Parameters ◽  
Deep Hole ◽  
Machining Quality ◽  
Gun Drill

Abstract There are a lot of problems exist in the processing of long and thin deep hole gun drilling of high strength steel, such as insufficient of the machining mechanism and characteristics of gun drilling, difficulty in selecting machining parameters, unknown influence mechanism of machining parameters on drilling force, drilling temperature and machining quality. In this paper, 42CrMo high strength steel is selected as the workpiece material. A numerical model of cutting force is established based on the mechanism of gun drill, and then the finite element simulation and processing test are carried out. The results show that the cutting force decreases with the increase of cutting speed, and increases with the increase of feed speed; the error between the theoretical and actual value is less than 10%. Cutting speed and feed speed have a great influence on machining quality, and the cutting fluid pressure mainly affects the surface roughness.

Characterization of Horizontal Loads in the Production of Asymmetrical Parts

2011 ◽  
Vol 473 ◽  
pp. 223-228 ◽  
Author(s):  
Bernd Arno Behrens ◽  
Anas Bouguecha ◽  
Richard Krimm ◽  
Thorsten Matthias ◽  
Valerian Salfeld
Keyword(s):  
Thin Sheet ◽  
Research Centre ◽  
Computational Accuracy ◽  
Research Activity ◽  
German Research Foundation ◽  
The Press ◽  
German Research ◽  
Thin Sheet Metal ◽  
Complex Parts

The vision of Transregional Collaborative Research Centre 73 of the German Research Foundation (DFG) is the development of a new manufacturing technology, sheet-bulk metal forming. The research activity is focused on the manufacturing of geometrically complex parts with functional elements from thin sheet metal. This paper gives an overview about the challenges in forming of asymmetrical parts with regard to the forming forces and resulting displacements of the press components. Furthermore, it introduces an appropriate approach for consideration of machine characteristics in order to improve the computational accuracy of the process modelling.

Damage evolution in creep bulging of thin sheet metal

2000 ◽  
Vol 42 (2) ◽  
pp. 163-184
Author(s):  
J. Tirosh ◽  
L. Rubinski ◽  
A. Shirizly ◽  
D.P. Harvey II
Keyword(s):  
Sheet Metal ◽  
Damage Evolution ◽  
Thin Sheet ◽  
Thin Sheet Metal
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