Manufacturing and processing method for spiral gear capable of axially moving

A technology of helical gear and axial movement, applied in blast furnace parts, furnaces, blast furnace details, etc., can solve the problems that the strength and rotation flexibility of the helical gear cannot meet the working requirements, and the helical gear pair cannot be moved axially. Strength and rotational flexibility, long service life effect

Inactive Publication Date: 2016-04-27
中冶南方(武汉)重工制造有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of the working environment of the blast furnace, the general helical gear cannot meet the work requirements in terms of strength and rotation flexibility. The common helical gear pair cannot move axially, so it is necessary to design a new helical gear for furnace top distributor. Manufacturing method

Method used

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  • Manufacturing and processing method for spiral gear capable of axially moving
  • Manufacturing and processing method for spiral gear capable of axially moving
  • Manufacturing and processing method for spiral gear capable of axially moving

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Embodiment Construction

[0048] Below in conjunction with specific embodiment, the present invention is further described:

[0049] Such as Figure 1 to Figure 3 The manufacturing and processing method of the axially movable helical gear shown, its steps include:

[0050] 1. Technical requirements: The material of the helical gear is ZG35CrMo;

[0051] 2. Casting and modeling should pay attention to casting 2 pieces of conjoined test blocks, and the allowance of each processing surface of the size should be sufficient;

[0052] 3. Rough turning, each surface of rough turning, leave margin according to the rough order drawing, and check the dimensions according to the rough order drawing;

[0053] 4. UT inspection, the quality level reaches level 2 of JB / T5000.6-98;

[0054] 5. Quenching and tempering to ensure that the hardness of each surface after finishing is within HB207-269, and record the tempering curve;

[0055] 6. For each side of the semi-finishing car, leave a margin of 2.5-3 on one sid...

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Abstract

The invention provides a manufacturing and processing method for a spiral gear capable of axially moving. The manufacturing and processing method comprises the following steps: casting, roughly turning each surface, carrying out UT checking, hardening and tempering, carrying out semi-finishing on each surface, carrying out primary making-out, drawing out a central line and a bearing line of each angle, milling and boring a spiral structure on the outer surface, checking spiral surface allowance, carrying out turning, processing inner and outer circles and an axial dimension, carrying out gear hobbing, clamping a lower end surface, carrying out secondary marking-out, drawing the positions of the bearing lines and relative bearings of holes, carrying out drilling processing, drilling threaded holes in a step of an inner wall, tapping, tapping pipe threads, carrying out precision boring, carrying out finish-milling on a spiral surface, carrying out distribution drilling and removing burrs. Components processed by the method meet requirements of a blast furnace working environment, so that the components have relatively good strength and rotation flexibility, and are longer in service lives; and under the action of a drive gear, the spiral gear axially moves along a guide part, and therefore, the manufacturing and processing method is suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of blast furnace equipment in the metallurgical industry, in particular to a manufacturing and processing method for an axially movable helical gear in a top distributor of a blast furnace. Background technique [0002] Furnace top equipment is used to charge materials into the furnace and distribute them reasonably in the furnace, and at the same time, it plays the role of sealing the furnace top. Modern large-scale blast furnaces need to load thousands of tons of charge from the furnace top into the furnace every day. The equipment is frequently started and braked, and the load is heavy, and the surface of the parts is constantly impacted and worn by the charge, which is prone to aging. Therefore, for a long time, major steel mills in my country have mainly relied on imported equipment to meet equipment demand, and domestic fabric equipment has not been widely promoted due to various reasons. [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14C21B7/00
Inventor 张加旺汪先刚张文忠
Owner 中冶南方(武汉)重工制造有限公司
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