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

Pressure quenching die and technology for large-diameter thin arc plate carburized gear

A technology of carburizing gears and large diameters, which is applied in the direction of gears, metal material coating technology, forming tools, etc., can solve the problem of high heat treatment deformation control requirements, and achieve the effects of improving heat treatment quality, convenient operation, and eliminating temperature differences

Active Publication Date: 2021-12-17
JIANGLU MACHINERY & ELECTRONICS GROUP
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a simple process flow and high production efficiency, but the requirements for heat treatment deformation control in the carburizing and quenching stages are quite high

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
  • Pressure quenching die and technology for large-diameter thin arc plate carburized gear
  • Pressure quenching die and technology for large-diameter thin arc plate carburized gear
  • Pressure quenching die and technology for large-diameter thin arc plate carburized gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] S1. The part blank is a die forging. Before carburizing, the outer teeth, inner ring groove and groove bottom are all processed to a finishing allowance of about 0.3mm on one side. The arc plate is processed to the size required by the drawing, and anti-seepage paint is applied as required. ready for carburizing;

[0049] S2. The carburizing temperature is 930°C, the carburizing layer is (1.2-1.5) mm, and the carburizing equipment is an Ipsen controllable atmosphere multi-purpose furnace. The big end of the parts is placed flat on the material plate, and a 31mm high pad is used in the center block support;

[0050] S3. After carburizing + high-temperature tempering, scrub to remove the anti-seepage coating. The high-temperature tempering parameter is 640°C×240min, and then switch to quenching after high-temperature tempering;

[0051] S4. When quenching, put the large end of the part down and place it in an electric furnace for heating at a temperature of 800±10°C for ...

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
heightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a pressure quenching die and technology for a large-diameter thin arc plate carburized gear, relates to the technical field of heat treatment pressure quenching dies and technologies, and solves the technical problems of heat treatment deformation and low production efficiency of an existing control gear. The pressure quenching die comprises a mandrel base, a blocking plate, a supporting plate, an outer ring supporting ring, a guide cone fixing screw, an outer pressing ring, an inner pressing ring, an inner hole die guide cone, an inner hole expanding die, a screw, a spring, a fixing ring, a guide cone reset spring, a hexagon socket cap screw, a standard elastic washer, an ejector rod and a ring spring. The gear is heated to the quenching temperature, the temperature is kept for a period of time, the gear is transferred from a heating furnace and is sleeved with the pressure quenching die by the aid of a special extraction assistive tool, a press is started, plane warping, limiting diameter, height size and the like are corrected under the combined action of the press and the die, a part meeting the finish machining requirement is obtained. The die has the characteristics of being convenient to operate, long in service life, good in gear shape correction effect and the like, and is worthy of application and popularization.

Description

technical field [0001] The invention relates to the technical field of heat treatment pressure quenching dies and processes, and more specifically relates to the field of press quenching dies and processes for large-diameter thin arc plate carburized gears. Background technique [0002] The steering gear is an important part in the comprehensive transmission device of the planetary transmission mechanism, which plays the role of transmitting the steering power. A steering gear is a large-diameter thin arc plate structure, the material is 20Cr2Ni4A steel, the φ158 inner ring groove and outer teeth require carburizing, the inner spline is not allowed to be carburized, the common normal diameter of the outer teeth is φ435mm, the arc plate wall thickness is 9mm, and the inner ring groove 31mm in the air. [0003] The economical and efficient manufacturing process of this part is: blanking→die forging→preheat treatment→rough machining to only remaining→carburizing+quenching→fini...

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): C21D1/667C21D1/673C21D9/32C23C8/20B21D37/10B21D37/12B21D53/28
CPCC21D1/673C21D9/32C21D9/0062C21D1/667C23C8/20B21D53/28B21D37/10B21D37/12
Inventor 刘克陈建文苟磊王倩蒋亦舟朱旭余杰袁伍丰左经纬
Owner JIANGLU MACHINERY & ELECTRONICS GROUP
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