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

Application of PAG quenching liquid in quenching and tempering process of wind power main shaft of more than 20t

A wind power spindle and quenching liquid technology, applied in the direction of quenching agent, manufacturing tools, furnaces, etc., can solve the problems of high quenching cost, poor labor environment, unfavorable environmental protection, etc., and achieve low comprehensive cost, long effective life, and oxidative degradation. Effects of low aging rates

Pending Publication Date: 2022-05-06
TONGYU HEAVY IND
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ideal quenching medium has a strong cooling capacity in the high temperature zone and a moderate cooling rate in the low temperature zone, which can not only ensure the performance of the workpiece, but also reduce the risk of quenching cracking, but it is difficult to have a quenching medium that can reach or approach the ideal Cooling properties of the cooling medium
The traditional quenching and tempering cooling of the spindle adopts the cooling method of water quenching and oil cooling double liquid quenching, which can meet the quenching requirements of conventional materials, but when oil cooling will produce relatively large oil fume, which is not conducive to environmental protection, but also makes the working environment for workers poor, and the quenching cost higher

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
  • Application of PAG quenching liquid in quenching and tempering process of wind power main shaft of more than 20t
  • Application of PAG quenching liquid in quenching and tempering process of wind power main shaft of more than 20t
  • Application of PAG quenching liquid in quenching and tempering process of wind power main shaft of more than 20t

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] The performance and concentration of the selected PAG quenching liquid are shown in Table 1.

[0018] name concentration temperature(℃ / s) V / max(°C / s) V / 300(°C / s) PAG 5％-9％ 30 ≥190 ≤80

[0019] Table I

[0020] The material of the spindle selected for debugging is: 34CrNiMo6, the quenched and tempered weight: 20.1t, its mechanical properties are shown in Table 2 below, the quenched and tempered size and sampling are as follows figure 2 shown.

[0021]

[0022] Table II

[0023] The debugging process of this application is: quenching heating and heat preservation stage, quenching cooling stage, tempering stage, wherein the operation of quenching heating and heat preservation stage, tempering stage is as follows image 3 shown.

[0024] In the quenching and cooling stage, PAG quenching liquid is used for single-liquid quenching. When quenching, the control points are as follows:

[0025] 1. It takes less than 4 minutes for the workpi...

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

No PUM Login to View More

Abstract

According to the application of the PAG quenching liquid in the quenching and tempering process of the wind power main shaft of 20 t or above, a using method comprises the following steps that a workpiece is fed into the PAG quenching liquid after being discharged from a furnace, the cooling time is controlled to be 9.5-11 min / 100 mm, the initial liquid temperature of the PAG quenching liquid is controlled to be 15-40 DEG C, and the liquid temperature is controlled to be 15-50 DEG C in the quenching process. The PAG quenching agent used in the invention has the advantages of unique inverse solubility, adjustable concentration, good thermal stability, no deterioration after long-term use, long effective life, no toxicity, no smoke, no flame, health, environmental protection, low comprehensive cost and the like, and the cooling speed of the PAG quenching medium can be realized by adjusting solution concentration, quenching temperature and stirring. The PAG quenching agent is relatively low in oxidative degradability and aging rate, good in hydrolytic stability and relatively high in process adaptability, the optimal concentration and the quenching cooling process of the PAG quenching agent used in the quenching and tempering process of the wind power main shaft of 20 t or above are found through the mode of using the PAG quenching agent and adjusting the concentration and the flow speed of quenching liquid, and the PAG quenching agent has the advantages of being low in energy consumption, low in cost and the like. Therefore, the problems of environmental pollution, high energy consumption and the like caused by a traditional quenching process are avoided.

Description

technical field [0001] The invention relates to the field of preparation of wind power main shafts of more than 20 tons, specifically the application of PAG quenching liquid in the quenching and tempering process of wind power main shafts of more than 20 tons. Background technique [0002] In the heat treatment industry, the quenching medium can be divided into: water, oil, organic polymer quenching agent. The ideal quenching medium has a strong cooling capacity in the high temperature zone and a moderate cooling rate in the low temperature zone, which can not only ensure the performance of the workpiece, but also reduce the risk of quenching cracking, but it is difficult to have a quenching medium that can reach or approach the ideal Cooling properties of the cooling medium. The traditional quenching and tempering cooling of the spindle adopts the cooling method of water quenching and oil cooling double liquid quenching, which can meet the quenching requirements of convent...

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): C21D9/28C21D1/56
CPCC21D9/28C21D1/56
Inventor 杨后雷沈元国刘少斌刘崇鲁李福强
Owner TONGYU HEAVY IND
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