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Production process of single hydraulic prop head

A single hydraulic prop and production process technology, applied in props/supports, mining equipment, earthwork drilling, etc., can solve the problems of unstable product hardness, waste of materials, and reduced production efficiency, saving raw materials and reducing production costs. , the effect of improving production efficiency

Inactive Publication Date: 2010-01-27
张峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Use a drill press to drill two Φ64mm holes and one Φ40mm hole, which not only wastes materials, increases production costs, but also reduces production efficiency
[0006] 2. Heat treatment after rough machining of the stigma, the hardness of the product is unstable, and the production cost is also increased

Method used

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  • Production process of single hydraulic prop head
  • Production process of single hydraulic prop head
  • Production process of single hydraulic prop head

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Purchase a continuous casting billet with a specification of 80x80mm, cut 6.75Kg with a band sawing machine, heat it to 1100-1180°C with a pusher type coal-fired gas furnace, and make the heated billet with a diameter of 91±1.5mm on a 400Kg air hammer after it is released from the furnace. The round blank is put into the mold of a 630-ton friction press for closed-type forging without flash, and the shape of the column head forging is forged as figure 2 As shown (mold assembly diagram see image 3 ), press the pneumatic reversing valve to pull out a movable steel plate with a thickness of 60mm at the bottom of the mold, and the friction press presses the stigma forging blank together with two movable forging cores out of the mold, and falls into it from the top material hole of the friction press Cooling in the foundation pit (salt water with a concentration of 3-5% is stored in the foundation pit, the temperature of this salt water is controlled within the range of 20...

Embodiment 2

[0047] Purchase round steel with a diameter of 80mm, cut 6.65Kg from the bar cutting machine, heat it to 1120-1200°C with a 500KW medium-frequency induction heating furnace, press it into a round billet with a diameter of 92±1mm on a 100-ton punch press, and put it into a 1-ton punch press Carry out closed forging (die assembly drawing see Figure 4 ), the punch automatically ejects the column head forging and the inner mold, and the operator uses special pliers (see Figure 5 ) to clamp the two ends of the stigma, put it into the supersaturated tripod water solution to cool for 25-30 seconds, and then air-cool (the working temperature of the supersaturated tripod water solution is controlled within the range of 20-55 °C, and it is cooled by circulation in the cooling tower), Temper in a well-type tempering furnace at 560±30°C, rough machining Φ42mm with a drilling machine, rough and finish machining with a lathe, galvanized, and put into storage.

[0048] In this embodiment,...

Embodiment 3

[0050] Purchase round steel with a diameter of 80mm, cut 6.65Kg into the bar cutting machine, heat it to 1100-1160°C with a 500KW medium-frequency induction heating furnace, press it into a round billet with a diameter of 92±1mm on a 100-ton punching machine, and put it into 400 tons Closed forging is carried out by the hydraulic press, and the column head forging is automatically ejected, and the operator uses special pliers (see Figure 5 ) Clamp both ends of the stigma, put it in tap water to cool for 8-12 seconds, then air-cool, take the stigma that has been cooled to room temperature in the air for inspection (if the hardness of the stigma is too high, reduce the cooling time of the stigma in tap water, otherwise) Processing Φ42mm, lathe rough and finish machining is completed at one time, galvanized, and put into storage.

[0051] In this embodiment, the production cost of each 156mm-long single hydraulic prop column head is 8-10 yuan lower than that of the current produ...

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PUM

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Abstract

Disclosed is a low-cost and high efficiency single hydraulic prop head producing technique, comprising the following steps: a, purchasing steel materials(using continuous casting slab for the forging production line which has strong capability in blank forming, and using round steel for that which has weak capability in blank forming); b, cutting materials; c. heating the steel blanks to 900 to 1250 DEG C by using an electrical furnace or a fuel furnace; d, removing the surface oxidated; e, completing the blank forming of the steel blanks on a mechanical blank-producing equipment; f, forging the produced forging blank on a press machine by flashless closed-die forging; g, processing the prop head forging piece by thermal treatment by using the forging waste heat; h, roughly processing a hole with phi 42mm by a drilling machine; i, performing a rough and a fine processing for respective once by a lathe; j, zinc plating; and k, warehousing.

Description

technical field [0001] The invention relates to a production process of a single hydraulic prop column head. Background technique [0002] At present, the accessories column head of single hydraulic prop in coal mine (such as figure 1 Shown) the production process is as follows (take the production of a column head with a length of 156mm as an example): [0003] Purchase round steel with a diameter of 95mm, blanking (8.8+0.1KG), drill two Φ64mm holes and one Φ40mm hole with a drilling machine, rough machining on a lathe, rough machining a Φ42mm hole on a drilling machine, heat treatment (resistance furnace, medium frequency induction heating furnace or fuel furnace), lathe finishing, galvanizing, storage. [0004] The problems existing in the current stigma production process are as follows: [0005] 1. Drilling two Φ64mm holes and one Φ40mm hole with a drilling machine not only wastes materials, increases production costs, but also reduces production efficiency. [0006...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00E21D15/44
Inventor 张峰刘月兰
Owner 张峰