Manufacturing Dies for Micro and Meso Direct Extrusion Processes

2013 ◽  
Vol 13 (3) ◽  
pp. 177-181
Author(s):  
Alexandre Milanez ◽  
Lírio Schaeffer ◽  
Anderson Daleffe ◽  
Mateus Milanez
Keyword(s):  
Friction Coefficient ◽  
High Speed ◽  
High Speed Steel ◽  
Die Design ◽  
Machining Process ◽  
Extrusion Dies ◽  
Extrusion Die ◽  
Input Material ◽  
Metal Materials ◽  
Diamond Paste

AbstractThis work describes the development and manufacture of micro and meso extrusion dies used to extrude metal materials. The die design was based on different extrusion angles and diameters of input materials. An extrusion die was made to input material measuring 1 mm and for reduction to 0.8 mm with a 30° angle of extrusion. For the same diameter of material, another two dies were manufactured with extrusion angles of 45° and 60°. For meso sized extrusion, another three dies were made and the diameter of the input material was 4 mm with a reduction to 3 mm and extrusion angles of 30°, 45° and 60°. During the machining of the extrusion dies, high speed steel (HSS) drills were used with a tip angle according to the extrusion angles. After machining, the dies were treated thermally and polished to diminish the friction coefficient between the part to be extruded and the die. The results of the machining process indicate that extrusion dies can be manufactured using quick HSS drill and polishing can be done using diamond paste with satisfactory results.

MUSTANG-LC

Alloy Digest ◽  
1967 ◽  
Vol 16 (4) ◽  
Keyword(s):  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Hot Extrusion ◽  
Heat Treating ◽  
Hot Forming ◽  
Steel Company ◽  
Extrusion Dies ◽  
Die Life

Abstract Mustang-LC is a tungsten-molybdenum high-speed steel specially developed for hot work applications requiring long die life. It is recommended for hot forming and swaging dies, hot extrusion dies, hot punches, etc. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-192. Producer or source: Jessop Steel Company.

Granulation of Extruded Plastic Wires: Influence of Tool Coating Properties and Tool Geometry on Cutting Forces and Tool Wear

2016 ◽  
Vol 1140 ◽  
pp. 181-188
Author(s):  
Macario Cardone ◽  
Matthias Putz ◽  
Gerhard Schmidt ◽  
Martin Dix ◽  
Jürgen Friedrich ◽  
...  
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
Polyamide 6 ◽  
Machining Process ◽  
Test Facility ◽  
Tool Geometry ◽  
Coated Tools ◽  
Tool Coating ◽  
Before And After ◽  
Wear Evaluation

Granulators are widely used to reduce reinforced and unreinforced plastic strands in small pieces. The tools implemented in this machining process are mainly made of high-speed steel. This work investigates diverse PVD hard thin coatings with the aim of improving tool life and efficiency in granulation technology. A test facility reproducing the main features of a real granulator has been designed and assembled. The machined strand materials are ABS plastic and fibreglass-reinforced polyamide 6, while the tested PVD films are CrN, TiCN, TiAlN and two different diamond-like carbon coatings. The wear evaluation of all coated tools has been done via structured light projection, together with a scanning electron microscopy-based analysis, before and after their implementation on the test facility. Furthermore, a suitable 2D finite element modelling of the machining process has been realized.

Collaborative Aluminum Profile Design to Adaptable Die Process Planning Using Neural Networks

2010 ◽  
Vol 443 ◽  
pp. 207-212 ◽  
Author(s):  
Suthep Butdee ◽  
Chaiwat Noomtong ◽  
Serge Tichkiewitch
Keyword(s):  
Neural Network ◽  
Process Planning ◽  
Collaborative Design ◽  
Die Design ◽  
Machining Process ◽  
Aluminum Extrusion ◽  
Product Data ◽  
Die Geometry ◽  
Extrusion Die ◽  
Profile Design

Aluminum extrusion die manufacturing is a critical task for productive improvement and increasing potential of competition in aluminum extrusion industry. It causes to meet the efficiency not only consistent quality but also time and production cost reduction. Die manufacturing consists first of die design and process planning in order to make a die for extruding the customer’s requirement products. The efficiency of die design and process planning are based on the knowledge and experience of die design and die manufacturer experts. This knowledge has been formulated into a computer system called the knowledge-based system. It can be reused to support a new die design and process planning. Such knowledge can be extracted directly from die geometry which is composed of die features. These features are stored in die feature library to be prepared for producing a new die manufacturing. Die geometry is defined according to the characteristics of the profile, is called product data, so we can reuse die features from the previous similar profile design cases. This paper presents the artificial neural network to assist aluminum extrusion die design and process planning based on collaborative design methodology. Product data can be shared and distributed in die design team members via computer network technology. This product data is used to support die design and process planning. Die manufacturing cases in the case library would be retrieved with searching and learning method by neural network for reusing or revising it to build a die design and process planning when a new case is similar with the previous die manufacturing cases. The results of the system are dies design and machining process.

Validity of Adhesion between Films and Substrate with Friction-Detected Scratch Test

1993 ◽  
Vol 308 ◽  
Author(s):  
Ru Wang
Keyword(s):  
Friction Coefficient ◽  
Critical Load ◽  
High Speed ◽  
Sudden Change ◽  
High Speed Steel ◽  
Scratch Test ◽  
Optical Microscope ◽  
Film Substrate ◽  
Film Failure ◽  
Ti Films

ABSTRACTThe validity of Lc of film failure is studied with friction — detected scratch test . The specimens used in the experiment are ion-plated TiN and Ti films,Chemical-Plated NiPCu films on steel of various hardness,ion beam mixed plated TiN films on optical glass,The morphology of failed films was studied under optical microscope and scanning electronmicroscope,The composition of starting failure of films was analyzed with electro — probe. It is found that in the curves of scratch tests of ion-plated TiN and Ti films on high-speed steel,the load corresponding the sudden change of the horizontal force is the same as the critical load of film failure,however,the critical load obtained in the scratch test of the ion-plated TiN and Ti films on soft steel is the some deference compared with optical microscope analyzed, that is principally due to the property of films and substrates (hardness and coefficient).The morphology and mechanism of ion — plated TiN and Ti films on high —speed steel are also studied in the paper.The adhesion between film and substrate is an effective method in evaluating the films property. After apprasing the effectiveness of acoustic emission monitoring scratch test, someone think that no matter coated with hard or soft film it is effective on the brittle hard substrate. However,there exist errors to different extent on other film-substrate system,and the scratch test is inapplicable for soft film-soft substrate system[1]. P. A. Steinmann pointed out while studying the factors influnceing the critical load Lc,that friction coefficient is a key factor on Lc,it provided valuable information in measuring Lc,but it think it is imporsible to measure Lc totally dependent on sudden change friction or friction coefficient, howeveer, for a specific coating substrate system,it is acceptable to say that Lc is dependent on friction coefficient[2]. This paper study experimentally on the friction detected scratch test and found out that effectiveness of Lc varies substantially in different film-substrate system. The author studiied the regularity of various system and discuse the season. The failure morphology and principles of ion-plated TiN and Ti film on highspeed steel are also analyzed in this paper.

scholarly journals Analysis of the Performance of Drilling Operations for Improving Productivity

2021 ◽  
Author(s):  
Majid Tolouei-Rad ◽  
Muhammad Aamir
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Dimensional Accuracy ◽  
Vital Role ◽  
Machining Process ◽  
Drilling Process ◽  
Single Shot ◽  
Drilling Operations

Drilling is a vital machining process for many industries. Automotive and aerospace industries are among those industries which produce millions of holes where productivity, quality, and precision of drilled holes plays a vital role in their success. Therefore, a proper selection of machine tools and equipment, cutting tools and parameters is detrimental in achieving the required dimensional accuracy and surface roughness. This subsequently helps industries achieving success and improving the service life of their products. This chapter provides an introduction to the drilling process in manufacturing industries which helps improve the quality and productivity of drilling operations on metallic materials. It explains the advantages of using multi-spindle heads to improve the productivity and quality of drilled holes. An analysis of the holes produced by a multi-spindle head on aluminum alloys Al2024, Al6061, and Al5083 is presented in comparison to traditional single shot drilling. Also the effects of using uncoated carbide and high speed steel tools for producing high-quality holes in the formation of built-up edges and burrs are investigated and discussed.

An EM study of carbides in double austenitized AISI M2 high-speed steel

1990 ◽  
Vol 48 (4) ◽  
pp. 908-909
Author(s):  
Bilgehan Ögel ◽  
Erdoĝan Tekin
Keyword(s):  
High Speed ◽  
High Speed Steel ◽  
X Ray ◽  
Heat Treated ◽  
Conventional Heat Treatment ◽  
Fine Carbide ◽  
The Matrix ◽  
Carbide Distribution ◽  
M2 High Speed Steel ◽  
Diamond Paste

Multiple austenitization is not a conventional heat treatment process in tool steel industry and has only recently attracted some attention. Several workers who studied multiple austenitized high speed steels reported a fine carbide precipitation in the matrix of double austenitized specimens. However, the metallography of this precipitation is not well documented and needs further investigation. In this study, the microstructure of AISI M2 high speed steel and the effect of double austenitization on carbide distribution is investigated using SEM.The heat treated specimens were prepared by conventional metallographic methods for SEM examination. Polishing with diamond paste gave better results as much less carbides were extracted from their sites. Picral was used as an etchant.It is known that in M2 steels, undissolved carbides are either M6C or MC type. However, in the present investigation some of the massive undissolved M6C carbides contained small dark regions within them (Fig.l). X-ray mapping for W, Mo and V of such a carbide has shown that it is mainly a M6C carbide,whereas the dark regions on it is rich in vanadium implying that these regions represent V4C3 (Fig.2).

STUDY ON THE TRIBOLOGICAL BEHAVIOR OF CUTTING TOOLS COATED WITH FILMS

2011 ◽  
Vol 25 (31) ◽  
pp. 4261-4264 ◽  
Author(s):  
MANABU YASUOKA
Keyword(s):  
Friction Coefficient ◽  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Frictional Properties ◽  
Coated Tool ◽  
Significant Difference ◽  
The Difference ◽  
Pin On Disk

A hard film coat can improve a tool's performance. In this study, the frictional properties of an uncoated tool and a coated tool with TiN were measured against that of SCM440 (42 CrMo 4) steel. The results showed there was no significant difference between the friction coefficient of the high-speed steel tool and the tool coated with TiN but the friction coefficient of uncoated tool was slightly lower than that of the steel. In the second part of the study, coats of TiN , TiC , CrN , and TiAlN were deposited on high-speed steel and the wear characteristics were determined with a pin-on-disk wear examination. The differences in the friction coefficients were attributed to the difference in the wear of the slipping material. There were large differences in the adhesion characteristics on the surface of the slipping material. The author suggest that these differences influence the characteristics of the cutting tool.

The Comprehensive Comparison of the Selected Cutting Materials with Standard ISO 3685 in Machining Process of Steel C60

2014 ◽  
Vol 718 ◽  
pp. 93-98 ◽  
Author(s):  
Ján Duplák ◽  
Michal Hatala ◽  
Jozef Zajac ◽  
Karol Vasilko ◽  
Miroslav Kormoš ◽  
...  
Keyword(s):  
High Speed ◽  
Cutting Tools ◽  
High Speed Steel ◽  
Machining Process ◽  
Engineering Practice ◽  
Technical Standards ◽  
Sintered Carbide ◽  
Cutting Ceramic ◽  
Comprehensive Comparison ◽  
Steel Cutting

The main part of Standard ISO 3685 is T-vc dependence for various cutting materials. The Standard ISO 3685 contains main properties and characteristics for three most important cutting materials those are used in engineering practice. These cutting materials are used for cutting tools made of high speed steel, cutting ceramic and sintered carbide. Some types of cutting materials are defined by means of descriptions in standards ISO, some types by means of catalogues from the manufacturer. There are a lot of types of cutting materials they have not been defined theirs properties exactly yet and theirs properties have to be defined on experiments. There is a presumption that descriptions in standards ISO are not correct and these standards have to be examined and verified, because that this fact have to be confirmed or disproved. Accuracy and completeness technical standards ISO are very important part quality of manufacturing. Article describes process how to define T-vc dependence for cutting tools made of high speed steel, cutting ceramic and sintered carbide, because were found deficiencies in valid standard ISO 3685.

scholarly journals Characterization and Tribological Behavior of TiAlN/TiAlCN Multilayer Coatings

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Zhefeng Lei ◽  
Xiaodong Zhu ◽  
Yanhuai Li ◽  
Zhongxiao Song ◽  
Haiping Liu ◽  
...  
Keyword(s):  
Friction Coefficient ◽  
Flow Rate ◽  
Bonding Strength ◽  
High Speed ◽  
Tribological Behavior ◽  
Multilayer Coating ◽  
High Speed Steel ◽  
Multilayer Coatings ◽  
Low Wear ◽  
N2 Flow Rate

Effects of partial pressure of methane on deposition rate, hardness, bonding strength and friction coefficient of TiAlN/TiAlC0.37N0.63 multilayer coating were investigated. The TiAlN coating was deposited at a N2 flow rate of 70 sccm, and TiAlC0.37N0.63 coating were deposited at a N2 flow rate of 35 sccm and a CH4 flow rate of 35 sccm. TiAlN/TiAlC0.37N0.63 multilayer coatings with different modulation periods but the same total thickness of 3.56 μm were deposited on high speed steel (HSS) substrates using multi-arc ion plating technology. Microhardness and tribological measurement show that the multilayer coating with a modulating ratio of 1:1 and a modulation period of 68 nm had a hardness of 2793.9 HV0.10, an excellent bonding strength of 52 N, and the minimum friction coefficient of 0.46 and a relatively low wear rate.

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