Isothermal forging die laser repair method

A technology of isothermal forging and laser repair, which is used in manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. The effect of preventing overheating

Inactive Publication Date: 2018-12-18
西安国宏天易智能科技有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For small defects or defects, mechanical methods are generally used to polish them; for larger defects such as cracks, which affect the normal use of the mold and cannot be repaired, they are generally scrapped directly, which causes a great waste of materials

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
  • Isothermal forging die laser repair method
  • Isothermal forging die laser repair method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The main mass percentages of superalloy materials for isothermal forging are C 0.14%, Cr 11.5%, Co5.2%, W 5.3%, Mo 4.2%, Al 5.3%, Ti 2.6%, Fe 0.5%, a small amount of traces and impurities elements, and the rest are Ni. The defects in the above-mentioned molds are in the form of cracks, and the steps of laser repair are as follows: use mechanical methods to dig out the defects to form a groove with an opening of 90°; use acetone to treat all surfaces of the groove, including the edge of the top of the groove. Thorough cleaning to remove stains on the surface; use oxygen-acetylene flame to preheat the groove, use infrared induction thermometer to measure the preheating temperature, stop heating when the preheating temperature reaches 900 °C; use laser repair method to repair the groove The laser power is 1Kw, the laser scanning speed is 200mm / min, the spot diameter is 1.0mm, the powder feeding rate is 10g / min, the overlap rate is 50%, and the laser is suspended when the h...

Embodiment 2

[0042]The main mass percentages of superalloy materials for isothermal forging are C 0.12%, Cr 11.0%, Co5.3%, W 5.2%, Mo 4.4%, Al 5.7%, Ti 2.7%, Fe 0.4%, a small amount of traces and impurities elements, and the rest are Ni. The above-mentioned defects in the mold are in the form of cracks, and the steps of laser repair are as follows: use mechanical methods to dig out the defects to form a groove with an opening of 120°; use alcohol to clean all the surfaces of the groove, including the edge of the top of the groove. Thoroughly clean to remove the stains on the surface; use oxygen-acetylene flame to preheat the groove, use infrared induction thermometer to measure the preheating temperature, stop heating when the preheating temperature exceeds 800 ℃; use laser repair method to repair the groove The laser power is 6Kw, the laser scanning speed is 300mm / min, the spot diameter is 3.0mm, the powder feeding rate is 30g / min, the overlap rate is 50%, and the laser is suspended when ...

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
angleaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses an isothermal forging die laser repair method. The isothermal forging die laser repair method comprises the steps that excavation treatment is carried out on a crack area of anisothermal forging die to be repaired to form a repair groove, and cleaning is carried out; the isothermal forging die is large in size as a whole, and thereby being not capable of being preheated asa whole before laser repair, thermal stress cracking is prevented from appearing in a repair area or a die interface area by preheating the cleaned groove to 800 DEG C to 900 DEG C, lasers are adopted for carrying out groove repair layer by layer then, the repair height of each time ranges from 2 millimeters to 10 millimeters, ultrasonic waves are adopted for removing laser repair residual stresson one repaired layer after each time of repair so as to avoid stress concentration, and then cracking caused by stress is avoided; and spare repaired layers are removed by adopting a machining method at last to guarantee that the size of a machined die is the same as an originally designed size, and then repair on the crack area of the isothermal forging die is achieved. Because the laser repairtechnology is adopted for repairing defects of the isothermal forging die, the utilization ratio of the die is increased, and resource waste is reduced.

Description

technical field [0001] The invention relates to the technical field of laser repair, in particular to a laser repair method for an isothermal forging die. Background technique [0002] The isothermal die forging method is widely used in the production of blanks such as aero-engine turbine disks and compressor disks. The temperature during forging is very high, mostly around 950°C, and the stress generated during the forging process is very large. And high temperature mechanical properties put forward very high requirements. [0003] Nickel-based superalloys are important materials commonly used in aero-engines because of their excellent high temperature resistance and corrosion resistance. They have the advantages of stable structure and strong strengthening ability. The alloy can be strengthened in many ways, solid solution strengthening, second phase strengthening and grain boundary strengthening can be implemented. In order to achieve Gauguin's strengthening effect, a v...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/05B21J13/02
CPCB21J13/02C22C19/055C22C19/056C23C24/103
Inventor 朱丽娟
Owner 西安国宏天易智能科技有限公司
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