scholarly journals Transparent, Lightweight, and High Strength Polyethylene Films by a Scalable Continuous Extrusion and Solid‐State Drawing Process

2019 ◽  
Vol 304 (8) ◽  
pp. 1900138 ◽  
Author(s):  
Yunyin Lin ◽  
Wei Tu ◽  
Rob C. P. Verpaalen ◽  
Han Zhang ◽  
Cees W. M. Bastiaansen ◽  
...  
Keyword(s):  
Solid State ◽  
High Strength ◽  
Drawing Process ◽  
Polyethylene Films ◽  
Continuous Extrusion

scholarly journals Effect of Drawing Parameters on the Properties of Polypropylene/Inorganic Particles Composites by Solid-State Die Drawing

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3913
Author(s):  
Jianchen Cai ◽  
Jinyun Jiang ◽  
Qun Yang ◽  
Peng Cheng ◽  
Ke Chen ◽  
...  
Keyword(s):  
Solid State ◽  
High Strength ◽  
Processing Method ◽  
Drawing Process ◽  
Inorganic Particles ◽  
Inorganic Particle ◽  
Drawing Temperature ◽  
Drawing Speed ◽  
New Strategy ◽  
Application Prospects

Die drawing is an effective method for improving the properties of polymer. In this work, polypropylene (PP)/inorganic particle composites were fabricated by a solid-state die drawing process to investigate the effects of drawing parameters, such as inorganic particles types, drawing temperature, and drawing speed, on the thermal properties, microstructure, and mechanical behavior of the drawn composites. The mechanical properties of the material were significantly improved through this processing method. For the drawn PP/inorganic particle composites with 45 wt% CaCO3, when the drawing speed was 2.0 m/min and the drawing temperature was 110 °C, the density of the drawn composites reached the lowest at 1.00 g/cm3. At this time, the tensile strength, flexural strength, and impact strength of the drawn composites were 128.32 MPa, 77.12 MPa, and 170.42 KJ/m2, respectively. This work provides a new strategy for the preparation of lightweight and high-strength PP-based composites, which have broad application prospects in the field of engineering and structural materials.

Welding Procedure Establishment for Tubular Joints Welded by Single Station, Solid State Welding Machine

2010 ◽  
Author(s):  
Ganesan S. Marimuthu ◽  
Per Thomas Moe ◽  
Bjarne Salberg ◽  
Junyan Liu ◽  
Henry Valberg ◽  
...  
Keyword(s):  
Solid State ◽  
Oil And Gas ◽  
Welding Process ◽  
High Strength ◽  
Pipe Material ◽  
Tubular Joints ◽  
Welding Machine ◽  
Single Station ◽  
Welding Procedure ◽  
Treatment Procedures

Forge welding is an efficient welding method for tubular joints applicable in oil and gas industries due to its simplicity in carrying out the welding, absence of molten metal and filler metals, small heat-affected zone and high process flexibility. Prior to forging, the ends (bevels) of the joining tubes can be heated by torch or electromagnetic (EM) techniques, such as induction or high frequency resistance heating. The hot bevels are subsequently pressed together to establish the weld. The entire welding process can be completed within seconds and consistently produces superior quality joints of very high strength and adequate ductility. Industrial forge welding of tubes in the field is relatively expensive compared to laboratory testing. Moreover, at the initial stages of a new project sufficient quantities of pipe material may not be available for weldability testing. For these and several other reasons we have developed a highly efficient single station, solid state welding machine that carefully replicates the thermomechanical conditions of full-scale Shielded Active Gas Forge Welding Machines (SAG-FWM) for pipeline and casing applications. This representative laboratory machine can be used to weld tubular goods, perform material characterization and/or simulate welding and heat treatment procedures. The bevel shapes at mating ends of the tubes are optimized by ABAQUS® simulations to fine tune temperature distribution. The main aim of this paper is to establish a welding procedure for welding the tubular joints by the representative laboratory machine. The quality of the welded tubular joint was analyzed by macro/micro analyses, as well as hardness and bend tests. The challenges in optimizing the bevel shape and process parameters to weld high quality tubular joints are thoroughly discussed. Finally a welding procedure specification was established to weld the tubular joints in the representative laboratory machine.

Deformation Law of Cold Drawing Process of High Strength Bridge Cable Steel

2021 ◽  
Vol 1035 ◽  
pp. 801-807
Author(s):  
Xiao Lei Yin ◽  
Jian Cheng ◽  
Gang Zhao
Keyword(s):  
Strain Path ◽  
High Strength ◽  
Cold Drawing ◽  
Wire Drawing ◽  
Radial Deformation ◽  
Steel Bridge ◽  
Drawing Process ◽  
Single Pass ◽  
Potential Relationship ◽  
The Wire

High-strength cable-steel bridge is the “lifeline” of steel structure bridges, which requires high comprehensive mechanical properties, and cold-drawing is the most important process to produce high-strength cable-steel bridge. Therefore, through the ABAQUS platform, a bridge wire drawing model was established, and the simulation analysis on the process of stress strain law and strain path trends for high-strength bridge steel wire from Φ 12.65 mm by seven cold-drawing to Φ 6.90 mm was conducted. The simulation results show that the wire drawing the heart of the main axial deformation, surface and sub-surface of the main axial and radial deformation occurred, with the increase in the number of drawing the road, the overall deformation of the wire was also more obvious non-uniformity. In the single-pass drawing process, the change in the potential relationship of each layer of material was small, and multiple inflection points appeared in the strain path diagram; the change in the seven-pass potential relationship was more drastic, which can basically be regarded as a simple superposition of multiple single-pass pulls.

scholarly journals Glass-like transparent high strength polyethylene films by tuning drawing temperature

Polymer ◽  
2019 ◽  
Vol 171 ◽  
pp. 180-191 ◽  
Author(s):  
Yunyin Lin ◽  
Ruhi Patel ◽  
Jun Cao ◽  
Wei Tu ◽  
Han Zhang ◽  
...  
Keyword(s):  
High Strength ◽  
Polyethylene Films ◽  
Drawing Temperature

scholarly journals Efficiency of use of the solid-state YAG: Nd-Laser for hardening of high-strength cast iron VCH 70-3

2018 ◽  
Vol 224 ◽  
pp. 03003
Author(s):  
Maxim Ivanov ◽  
Oleg Burlachenko ◽  
Alexandr Lyashenko
Keyword(s):  
Cast Iron ◽  
Laser Radiation ◽  
Solid State ◽  
Laser Processing ◽  
High Strength ◽  
Hardened Layer ◽  
Periodic Mode ◽  
Optimal Values ◽  
Iron Grade ◽  
Cylindrical Samples

The method to increase the durability of high-strength cast iron with spherical graphite YAG:Nd-laser radiation is proposed. The results of studies in laser processing of cylindrical samples of high-strength cast iron grade of the VCH 70-3 are presented by the YAG:Nd-laser, working in pulse-periodic mode. Effect of the treatment with 1 kW YAG:Nd-laser on microhardness of high-strength cast iron has been investigated. More effective laser strengthening is found to be occurred by YAG:Nd-laser processing as compared with continuous CO2-laser one. The results showed that when processing of cast iron in general, the zone of laser influence consists of the reflow zone and the zone of quenching from the solid state. The optimal values of parameters of the hardened layer in the radiation by the solid-state YAG:Nd laser are considered. It is shown that under fluence of laser radiation fluence more than 28 j/mm2 is occured the surface melting of cast iron.

Solid State Bonding of CuCrZr to Duplex Stainless Steel

2013 ◽  
Vol 302 ◽  
pp. 136-139 ◽  
Author(s):  
Ho Sung Lee ◽  
Jong Hoon Yoon ◽  
Joon Tae Yoo ◽  
Ji Ung Choi
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
High Temperature ◽  
Solid State ◽  
Duplex Stainless Steel ◽  
High Strength ◽  
Atomic Diffusion ◽  
Thermal And Mechanical Properties ◽  
Solid State Bonding ◽  
Duplex Steel

In the solid state bonding, joint are made by pressing surfaces together at high temperature so that a bond grows across the interface by atomic diffusion. In order to satisfy both requirements of thermal and mechanical properties of aerospace vehicle, conductive CuCrZr alloy was bonded to duplex steel with high strength. Solid state bonding was performed at 3 different pressure conditions and at temperatures of 850°C and 950°C. Microstructural and mechanical evaluation was performed to obtain the optimum joining condition.

High strength porous Ti–6Al–4V foams synthesized by solid state powder processing

2008 ◽  
Vol 41 (10) ◽  
pp. 105404 ◽  
Author(s):  
Min Ha Lee ◽  
Ki Buem Kim ◽  
Jun Hee Han ◽  
Jürgen Eckert ◽  
Daniel J Sordelet
Keyword(s):  
Solid State ◽  
Powder Processing ◽  
High Strength ◽  
Porous Ti

Characteristics of Deposition Precipitation Process in Production of High Strength and Low Carbon Steel in FTSR

2014 ◽  
Vol 886 ◽  
pp. 128-131
Author(s):  
Zhuo Fei Song ◽  
Shan Shan Feng ◽  
Yun Li Feng
Keyword(s):  
Solid State ◽  
Low Carbon Steel ◽  
High Strength ◽  
Dynamical Analysis ◽  
Precipitation Process ◽  
Second Phase ◽  
Low Carbon ◽  
Second Phase Particles ◽  
Thermodynamics And Dynamics ◽  
Hot Rolled

Precipitation characteristics of second phase in HSLC steel produced by FTSR technology have been researched by TEM and EDS in this article. And preliminary research of precipitation conditions of second phase particles in thermodynamics and dynamics have been took. The results indicate that: there’re second phase particles precipitated dispersively in hot rolled HSLC steels by FTSR technology. These particles mainly contain particles of Al2O3、MnS and AlN. Thermo dynamical analysis declares that most of the Al2O3 and all of the MnS、 AlN particles are precipitated in solid state. That’s why the precipitation process is slowed down by the diffusion velocity of the elements in solid, and thinner particles are precipitated while the material is in solid state than in liquid state.

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