Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Handheld grinding pan and use method thereof

A grinding disc and hand-held technology, applied in the field of hand-held grinding devices, can solve the problems of easy grinding deviation, difficulty in guaranteeing parallelism and flatness, etc.

Inactive Publication Date: 2009-09-09
DALIAN JIAOTONG UNIVERSITY
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to design a cheap, efficient and practical manual grinding disc for the shortcomings of easy grinding deviation and difficulty in ensuring parallelism and flatness during the preparation process of the above-mentioned electron microscope and metallographic samples.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Handheld grinding pan and use method thereof
  • Handheld grinding pan and use method thereof
  • Handheld grinding pan and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] In order to ensure wear resistance and corrosion resistance, the fixed ring is made of martensitic stainless steel 4Cr13. Figure 4 Machining, then vacuum quenching at 1020°C, then tempering at 350°C.

[0029] The stage, counterweight and counterweight support rod have no wear resistance requirements, and 304 austenitic stainless steel is selected, according to Figure 5 ~ Figure 7 It can be processed.

[0030] According to the size of the fixed ring, ordinary 6008-2RS deep groove ball bearings are selected. The bearings have sealing sleeves on both sides to prevent abrasives and liquids from entering the bearings to cause wear and corrosion. If the rust resistance of the bearing is considered, stainless steel bearings can be used, but the cost will increase slightly.

[0031] After the above parts are ready, press figure 2 The assembly shown is the handheld grinding disc of the present invention. The cost of producing a single piece of the grinding disc (including...

example 1

[0033] Utilize the grinding disc of the present invention to carry out the mechanical grinding of the electron microscope sample, after the mechanical grinding to 30 μm, carry out pit grinding and ion thinning again, the electron microscope photo of the sample is as follows Figure 8 As shown, the thin areas on the obtained samples are large and uniform.

example 2

[0035] Utilize grinding disc of the present invention to prepare metallographic sample, its metallographic structure photo is as Figure 9 As shown, the surface flatness of the obtained samples is relatively high.

[0036] It should be noted that the grinding disc of the present invention should be figure 1 Assembled in the sequence shown, when grinding on a grinder-polisher, the sample is rotated during grinding. If you do not want the sample to rotate, or manually grind on the sandpaper, you can not assemble the bearing (see the assembly diagram Figure 10 ). It can also be pressurized manually. At this time, the counterweight and support rod need to be removed, and the upper part of the stage can be pressed with fingers when grinding.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Melting pointaaaaaaaaaa
Login to View More

Abstract

The invention provides a handheld grinding pan and a use method thereof and is used for grinding transmission electron microscope film samples. The handheld grinding pan is provided with an object stage, a fixed ring, a bearing and a balance weight; a sample is stuck to the bottom of the object stage by modified wax, and the object stage can move up and down in the fixed ring; when the handheld grinding pan is in grinding, the jacket of the bearing is held by the hand of a person; because friction action exists between the fixed ring and a grinding platform of a grinding and polishing machine, the fixed ring is driven by the grinding platform to passively rotate and further drives the object stage and the sample to rotate so as to obtain the ground sample with higher parallelism and planarity; meanwhile, the bottom periphery of the fixed ring is provided with a liquid guide groove so as to ensure that a material to be ground smoothly passes by and reaches the ground sample, the material can be stirred and recycled under the passive rotation, the loss of the material due to the centrifugal effect is reduced and the material is ground with high efficiency and high quality. The grinding pan can be also used for grinding common metallographic samples and has the advantages of simple operation, high efficiency, practicability, low price, and the like.

Description

technical field [0001] The invention relates to a hand-held grinding device and a method for using the device, and is especially suitable for the mechanical pre-thinning stage in the sample preparation process of a transmission electron microscope. The device and grinding method are also suitable for grinding and polishing common metallographic samples. Background technique [0002] An ideal TEM thin film sample requires a thin (electron beam transparent) area with a large and uniform area and no artificial defects. The preparation of such a sample requires multiple thinning procedures. Generally, the first step is mechanical pre-thinning (grinding) ), it is required to grind to about 30 μm before the next step of thinning, so mechanical grinding is one of the key steps in the preparation of TEM thin film samples. [0003] The simple method is to paste the cut ~0.5mm thick sheet on a large flat carrier (such as rubber, metal block, etc.) with quick gel, and grind it manuall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N1/28
Inventor 陈春焕王国顺任瑞铭赵秀娟
Owner DALIAN JIAOTONG UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com