High indomitable and firm metal gradient structure shaft and its preparation mehtod

A gradient structure, high-strength technology, applied in the field of parts processing and manufacturing, can solve the problems of undiscovered, fractured, and high cost, and achieve the effect of avoiding catastrophic consequences

Inactive Publication Date: 2005-10-26
UNIV OF SCI & TECH BEIJING
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the alloy steel shaft can meet the requirements of good surface wear resistance and good core toughness by formulating a reasonable heat treatment process, it is difficult to ensure that the strength and toughness of the alloy steel shaft are uniform along the shaft section and length direction by using the heat treatment process Changes, and because it is the same material, once micro-cracks appear on the surface, they can directly expand to the core, causing fracture

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1: Manufacturing of gradient structure drive shaft

[0019] 1. Choose 40Cr steel pipe with outer diameter of 50mm, inner diameter of 22mm and length of 300mm and common carbon steel round steel of 22mm.

[0020] 2. The surface of 40Cr steel pipe and ordinary carbon steel round steel is cleaned by degreasing, pickling, rinsing, drying and other processes;

[0021] 3. Use a rotating wire brush to scrub the surface of the steel until the metal surface is fully exposed to fresh metal;

[0022] 4. Assemble 40Cr steel pipe and plain carbon steel round steel into rough billets.

[0023] 5. Use argon to clean the assembled round steel rough billet, so that an inert atmosphere is maintained between the assembled layers;

[0024] 6. The two ends of the round steel rough billet are welded and sealed under the protection of argon to become the round billet to be rolled;

[0025] 7. Use a heating furnace to quickly heat the assembled and welded round billets to be rolled at a sp...

Example Embodiment

[0028] Example 2: Manufacturing of gradient structure hub axle

[0029] 1. Choose GCr15 steel pipe with outer diameter 50mm, inner diameter 22mm and length 150mm and 22mm 45 # Round steel.

[0030] 2. Connect GCr15 steel pipe and 45 # The surface of round steel is cleaned by degreasing, pickling, rinsing, drying and other processes;

[0031] 3. Use a rotating wire brush to scrub the surface of the steel until the metal surface is fully exposed to fresh metal;

[0032] 4. Combine GCr15 steel pipe and 45 # Round steel is assembled into rough billets.

[0033] 5. Use argon to clean the assembled round steel rough billet, so that an inert atmosphere is maintained between the assembled layers;

[0034] 6. The two ends of the round steel rough billet are welded and sealed under the protection of argon to become the round billet to be rolled;

[0035] 7. Use a heating furnace to quickly heat the assembled and welded round billets to be rolled at a speed of 200°C per minute, and the heati...

Example Embodiment

[0038] Example 3: Spiral fit method of composite structure shaft blank

[0039] 1. Choose high-carbon alloy steel pipes, medium-carbon alloy steel pipes, and plain carbon steel round steel as raw materials;

[0040] 2. Make the selected raw materials into threads that can cooperate with each other;

[0041] 3. The surface is cleaned by degreasing, pickling, rinsing, drying and other processes;

[0042] 4. Use a rotating wire brush to scrub the surface of the steel until the metal surface is fully exposed to fresh metal;

[0043] 5. Combine the blanks into a composite shaft blank;

[0044] 6. The two ends of the round steel rough billet are welded and sealed under the protection of argon to become the round billet to be rolled;

[0045] 7. Use a heating furnace to quickly heat the assembled and welded round billets to be rolled at a speed of 200°C per minute, and the heating temperature is kept at 850°C for 120 minutes;

[0046]8. Use a cross wedge rolling mill to roll the heated r...

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
Outer diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Lengthaaaaaaaaaa
Login to view more

Abstract

A high-strength and-toughness metallic shift with gradient structure features that it is composed of 2-15 days which are respectively made of expensive high-quality alloy steel and cheap carbon steel or microalloyed steel. The high-strength antiwear materials are used for its surficial layers and the high-toughness materials are used for its core layers in order to transfer torque. Its preparing process is also disclosed.

Description

technical field [0001] The invention belongs to the technical field of parts processing and manufacturing, and in particular provides a high-strength, toughness, and wear-resistant gradient structural shaft and a manufacturing method thereof. Metal gradient structure materials have broader application prospects in the fields of machinery, metallurgy, transportation, mining, weapons and aviation. Background technique [0002] The shaft is an important part of a mechanical device, and it is widely used in the fields of machinery, metallurgy, transportation, mining, weapons and aviation. The main function of the shaft is to support rotating parts and transmit torque. Under the action of alternating loads such as bending and torsion, the surface of the shaft bears high stress, and the journal is also subject to greater friction and wear under the relative motion with the bearing, which requires the surface of the part to have higher strength, Hardness, wear resistance and high...

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): B32B15/01
Inventor 任学平侯红亮许荣昌金宪哲唐荻
Owner UNIV OF SCI & TECH BEIJING
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