Instrument for nitric acid method intergranular corrosion test of stainless steel and using method

A technology of intergranular corrosion and nitric acid method, applied in chemical instruments and methods, separation methods, steam condensation, etc., can solve the problems of metal losing mechanical properties, metal turning into powder, etc., and achieve the effect of ensuring accuracy

Pending Publication Date: 2021-12-17
THERMAL POWER TECH RES INST OF CHINA DATANG CORP SCI & TECH RES INST +2
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lose the mechanical properties of the meta

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
  • Instrument for nitric acid method intergranular corrosion test of stainless steel and using method
  • Instrument for nitric acid method intergranular corrosion test of stainless steel and using method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] The technical solutions of the present invention will be better understood by those skilled in the art, and the invention will be further described in conjunction with the accompanying drawings.

[0038] See Figure 1-2 Indicated;

[0039] The instrument of a stainless steel nitric acid method according to an embodiment of the present invention includes an instrument including:

[0040] Grinding tapered bottle 1;

[0041] The condenser 2, the bottom end of the condenser 2 is adapted to the bottle opening 11 of the grinding tapered bottle 1;

[0042] The condenser 2 includes a straight tube 21 and a condensed tube 22 disposed within a straight tube 21 having an air outlet 211 having a condensate 212, a condensate 212. Enter the bottle port 11 of the bluster tapered bottle 1;

[0043] The condensed tube 22 includes a condensed straight tube 221 and a threaded coil 222, the threaded coil 222 is swollen to the condensed straight pipe 221, and the bottom end of the threaded coil ...

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
Diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Wall thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an instrument for a nitric acid method intergranular corrosion test of stainless steel and a using method. The instrument comprises a ground conical flask, and a condenser, wherein the bottom end of the condenser is matched with an opening of the ground conical flask; the condenser comprises a straight pipe and a condensation pipe arranged in the straight pipe, a gas outlet is formed in the top end of the straight pipe, a condensation opening is formed in the bottom end of the straight pipe, and the condensation opening extends into the opening of the ground conical flask; and the condensation pipe comprises a straight condensation pipe and a threaded coil pipe, the threaded coil pipe is coiled on the straight condensation pipe, the bottom end of the threaded coil pipe is communicated with the bottom end of the straight condensation pipe, and the joint of the threaded coil pipe and the straight condensation pipe is in a hook shape. The instrument can meet the standard requirements of the nitric acid method intergranular corrosion test, and ensures the accuracy, reliability and effectiveness of the intergranular corrosion test.

Description

technical field [0001] The invention relates to the technical field of intergranular corrosion test, in particular to an instrument for stainless steel nitric acid method intergranular corrosion test and a use method. Background technique [0002] 18-8 type austenitic stainless steel has high chemical stability in many media, but after heating in the range of 400-800 ° C or cooling slowly in this temperature range, it is prone to intergranular corrosion in certain corrosive media. Intergranular corrosion is characterized by etching along grain boundaries. Make the metal lose its mechanical properties, causing the whole metal to become powder. In order to consider the intergranular corrosion resistance of materials in specific environments, materials can be evaluated by intergranular corrosion tests. [0003] The intergranular corrosion test is an accelerated metal corrosion test method for testing the intergranular corrosion sensitivity of metal materials under specific me...

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): B01D5/00
CPCB01D5/0006B01D5/0012B01D5/006
Inventor 张学星曾辉董树青马志宝商振强蒙殿武
Owner THERMAL POWER TECH RES INST OF CHINA DATANG CORP SCI & TECH RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap