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A new material for sprocket gas quenching and the process of processing sprocket with this material

A gas quenching and new material technology, applied in belts/chains/gears, elements with teeth, hoisting devices, etc., can solve the problems of long production cycle and difficult batch management, and achieve shortened production cycle, batch processing, etc. The effect of reducing the difficulty of secondary management and increasing the depth of carburization

Active Publication Date: 2020-02-07
临沂市金立机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the production cycle is too long and the batch management is difficult, and a new material is provided for processing the middle sprocket of the clutch drum to solve the problems existing in the production of existing products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A new material for sprocket gas quenching, which includes the following components by weight: 0.14% carbon, 0.2% silicon, 0.5% manganese, 1.4% nickel, 0.02% phosphorus, 0.03% sulfur, 1.4% chromium, and the rest is iron;

[0022] Utilize the technology of above-mentioned material processing sprocket, comprise the steps:

[0023] Drawing-annealing: The raw material blank is a round steel with a diameter of 35mm. After 9 times of drawing-annealing, it is repeatedly drawn and formed into the tooth shape of the product. After the last drawing and annealing, it enters the machining process;

[0024] Blanking: Cutting and blanking with a circular saw machine, the thickness of the saw blade is 2mm, and the speed is 300r / min;

[0025] CNC lathe processing: spindle speed 800r / min, feed rate 0.12mm / r;

[0026] Grinding burrs: Use a vibration grinder, the material used is quartz stone with a diameter of about 10mm, and the grinding time is 30min.

[0027] Outsourced carburizing:...

Embodiment 2

[0032] A new material for sprocket gas quenching, which includes the following components by weight: 0.16% carbon, 0.2% silicon, 0.9% manganese, 1.7% nickel, 0.01% phosphorus, 0.01% sulfur, 1.7% chromium, and the rest is iron;

[0033] Utilize the technology of above-mentioned material processing sprocket, comprise the steps:

[0034] Drawing-annealing: The raw material blank is a round steel with a diameter of 35mm. After 9 times of drawing-annealing, it is repeatedly drawn and formed into the tooth shape of the product. After the last drawing and annealing, it enters the machining process;

[0035] Blanking: Cutting and blanking with a circular saw machine, the thickness of the saw blade is 2mm, and the speed is 300r / min;

[0036] CNC lathe processing: spindle speed 800r / min, feed rate 0.12mm / r;

[0037] Grinding burrs: Use a vibration grinder, the material used is quartz stone with a diameter of about 10mm, and the grinding time is 30min.

[0038] Outsourced carburizing:...

Embodiment 3

[0046] Performance tests were performed on the sprockets prepared in Examples 1-2 and Comparative Example 1, and the results are shown in Table 1 below.

[0047] Table 1

[0048] group Production cycle (d) Impact energy / Ak(J / CM 2 )

[0049] Conclusion: as can be seen from the results in table 1 above, the production cycle is shortened to 25 days after the present invention is replaced with new materials, which is one time shorter than conventional materials; the sprocket wheel made by the present invention has good comprehensive performance, wherein up to 80 J / CM 2Above, the elongation has reached more than 15%, the tensile strength has reached more than 800MPa, and the carburizing depth has also been improved compared with the comparative example.

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Abstract

The invention belongs to the field of material application and discloses a new material for gas quenching of chain wheel. The new material comprises the following substances in percentage by weight: 0.14-0.2% of carbon, <=0.4% of silicon, 0.5-0.9% of manganese, 1.4-1.7% of nickel, <=0.025% of phosphorus, <=0.035% of Sulphur, 1.4-1.7% of chromium and the balance of iron. By adopting the new material and under the assistance of the improved technology, the production period is shortened to 25 days, and the processed chain wheel has good comprehensive performances.

Description

technical field [0001] The invention belongs to the field of material application, and in particular relates to a new material for sprocket gas quenching and a process for processing the sprocket with the material. Background technique [0002] With the progress of society and the improvement of people's environmental requirements, garden machinery is used by more and more people, and the performance and use requirements of products are also getting higher and higher; however, some parts of existing garden machinery adopt the original The material makes the production process complicated, and the raw material process: blanking-turning-outsourcing carburizing-brazing-outsourcing carburizing and quenching-finishing-inspection and packaging; the production cycle is long, reaching more than 50 days, and because the production cycle is too long This makes it more difficult for parts manufacturers to manage batches of products, which may cause batch mixing problems, especially for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H55/30F16H55/06B23P15/00B23P15/14
Inventor 温以民宋家杰吴纪明杜斌张明富
Owner 临沂市金立机械有限公司
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