搜索结果: 1-15 共查到“工学 hardness”相关记录30条 . 查询时间(0.115 秒)
Researches of liquid contaminants influence on change of hardness of agricultural tyre tread
degradation hardness Shore A tread
2015/5/18
Tyres represent the only element which connects a vehicle with a roadway and they are one of the most important parts of the vehicle. Investigated samples from chosen agricultural tyres were placed in...
Effect of heat treatment on the microstructure, hardness and abrasive wear resistance of high chromium hardfacing
destabilized austenite carbide dry rubber wheel test factorial regression GMAW toughness
2014/2/24
The effect of destabilization heat treatment on the microstructure, hardness, fracture toughness and abrasive wear
resistance of high chromium hardfacing was investigated. The results from the study...
Effect of sedimentation on the final hardness of polymeric particle composites
epoxy resin hardness X-ray analysis waste
2014/2/25
In present days composite materials are the indispensable part of many branches. They make a foray into the branch of agricultural production, where they are getting to intensive development of system...
Effects of Low Pressure Storage on Various Taste Components, Pectic Substances and Hardness of Ume Fruit
organic acids pectic substances hardness
2010/11/22
After treatment with about 200 ppm hypochlorite solution, ume fruit (Japanese apricot, Prunus mume Sieb. et Zucc.) was soaked in water, 5% NaCl or 10% NaCl with Ca lactate or ashed kelp as a hardener....
Hardness to toughness relationship on WC-Co tool gradient materials evaluated by Palmqvist method
Toughness Cemented carbides Palmqvist Powder Metallurgy
2010/8/17
Tool graded materials (TGM) incorporate gradual transitions in their microstructure and composition with distance. The gradients provide means to favourably engineer their thermo mechanical properties...
Influence of nickel on structure and hardness of Fe-Co bulk metallic glasses
nickel structure hardness glasses
2010/8/11
Metallic glasses (also known as metallic amorphous alloys) are newcomers to the group of amorphous materials. First, metallic glass (Au75Si25) was made by Duwez in 1960 and developed with the use of t...
Turning conditions of Ck 45 steel with alternate hardness zones
Machining Mechanical properties Dynamic properties
2009/12/14
Purpose: of this paper is investigation of dynamic impacts on cutting edge during machining of locally hardened steel. Alteration of hardness on a single work piece is a source of impact on tool, whic...
Comparative analysis of methods of hardness assessment
Quality management Statistical methods Measurement system capability Measurements of hardness
2010/8/16
Quality is a challenge that must be taken up by producers and other organisations. A formal requirement of quality are among others ISO 9000 standards, specific branch requirements e.g. ISO/TS 16949 (...
Examining the hardness of the high density polyethylene with method of the cone
Engineering polymers Mechanical properties Hardness
2009/12/1
Purpose: The purpose of this article is to present results of examining the hardness of the high density
polyethylene with method of the cone.
Design/methodology/approach: In the article a method of...
基于压痕加载曲线的谷物籽粒硬度性能测定技术（Testing of Grain Hardness Based on Indentation Loading Curve）
谷物 籽粒 硬度 压入法 试验
2010/5/5
使用500N微机控制材料试验机，利用压痕加载曲线，进行了用针尖压入法测定谷物籽粒硬度的试验研究，测得豌豆、蚕豆、大米、绿豆、小麦、扁豆以及玉米在不同组成部位、不同含水率时的硬度值在2～75MPa范围内。研究表明，试验加载速度在0.25～2.00mm/s范围内、针尖压入深度在0.25～1.50mm范围内时对试验结果无明显影响，而针尖锥度与籽粒硬度存在定量关系。 By using the 500N m...
Effects of Powder Hardness and Particle Size on the Densification of Cold Isostatically Pressed Powders
Cold Isostatic Pressing Metallic and Ceramic Powders Mechanical Behaviour
2009/10/12
The densification behaviour of aluminium, iron and alumina powders under cold isostatic pressing (CIP)are examined. For this purpose, a unit which can withstand up to 650 MPa pressure was designed and...
米饭硬度自动测量系统设计（Design of Automatic Measurement System of Cooked Rice Hardness）
米饭粒 硬度 测量系统 设计
2010/2/26
提出了一种基于机械力学测量手段建立米饭粒硬度自动测量系统的方法，阐述了该方法的基本原理、自动测量系统的组成和操作运行。通过试验说明，该系统测量米饭粒力-变形曲线的斜率能够适应稻米品质评定中对硬度指标的量化测试要求，且与使用食味计检测得出一致的结论。 The rice hardness is one of the most important qualification to scale the r...
The Development of a Novel Gold Alloy with 995 Fineness and Increased Hardness
Gold Alloy Hardness
2009/7/29
The mechanical properties and processing of a newly
developed ternary Au-Sb-Co alloy with 995 fineness are
discussed. The high gold content of this alloy (99.5 per
cent) facilitates marking as 24 c...
Evaluation of Treatments to Reduce Hardness of Agave americana Core
Agave americana inulin hardness colour
2009/3/9
Agave americana contains inulin as storage carbohydrate. Therefore, agave is interesting to be used for the extraction of inulin by pressing. The yield of the process is low due to the high hardness o...
Electrokinetic Study of Water Hardness on Acid Dyeing with Silk
water hardness silk acid dye zeta potential
2009/2/18
In this paper, the effect of water hardness, expressed in CaCO3, on the dyeing of silk with acid dye under acid, alkaline and isoelectric point dyeing conditions was studied using the zeta potential m...