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Method for die-forging forging piece by adopting single-arm hoisting ring for petroleum drilling

A processing method and oil drilling technology, which is applied in the processing field of single-arm lifting ring die forging forgings for oil drilling, can solve the problems of low qualified rate of finished products, unreasonable process, complex supporting facilities, etc., and achieve good surface quality and mechanical performance indicators Excellent effect

Active Publication Date: 2013-04-17
BAOJI PETROLEUM MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a processing method for die forging forgings using single-arm suspension rings for oil drills, which solves the problems in the prior art that the supporting facilities are complicated, the process is unreasonable, and the qualified rate of finished products is low.

Method used

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  • Method for die-forging forging piece by adopting single-arm hoisting ring for petroleum drilling
  • Method for die-forging forging piece by adopting single-arm hoisting ring for petroleum drilling
  • Method for die-forging forging piece by adopting single-arm hoisting ring for petroleum drilling

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Experimental program
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Effect test

Embodiment 1

[0038] Name: DH150 lifting ring, drawing number EG101501-01, production sequence number QA10001

[0039] Step 1. To elongate the stem part 1 of the single-arm ring die forging, in order to ensure the pairing of the rings, the rod part 1 cannot be pulled out to the size at one time, and the rod part 1 should be roughly dropped first. Rod part 1 fell to 5mm larger than the survival size, and the diameter and length of the rod were controlled.

[0040] Step 2, then use the mold to round the big end 2 and the small end 3 of the single-arm suspension ring;

[0041] Step 3. Then flatten the big end 2 and small end 3 of the single-arm lifting ring, and punch special-shaped holes; (according to the shape of the inner hole of the lifting ring, configure the corresponding punch. figure 1 ring inner hole diagram)

[0042] Step 4, die forging the big end 2 and small end 3 of the single-arm suspension ring;

[0043] Step 5. Cut off the flash 4 on the big end 2 and the small end 3 of the...

Embodiment 2

[0052] Name: DH250 lifting ring, drawing number EG105001-01, production sequence number QA9001

[0053]Step 1. To elongate the stem part 1 of the single-arm ring die forging, in order to ensure the pairing of the rings, the rod part 1 cannot be pulled out to the size at one time, and the rod part 1 should be roughly dropped first. Rod part 1 falls to 5mm-10mm larger than the survival size, and the diameter and length of the rod are controlled. The tolerance range of the rod part 1 is 8mm, and the tolerance of each pair is less than 3mm.

[0054] Step 2, then use the mold to round the big end 2 and the small end 3 of the single-arm suspension ring;

[0055] Step 3. Then flatten the big end 2 and small end 3 of the single-arm lifting ring, and punch special-shaped holes; (according to the shape of the inner hole of the lifting ring, configure the corresponding punch. figure 1 ring inner hole diagram)

[0056] Step 4, die forging the big end 2 and small end 3 of the single-arm...

Embodiment 3

[0066] Name: DH750 lifting ring, drawing number EG175002

[0067] Step 1. To elongate the stem part 1 of the single-arm ring die forging, in order to ensure the pairing of the rings, the rod part 1 cannot be pulled out to the size at one time, and the rod part 1 should be roughly dropped first. Rod part 1 falls to 5mm-10mm larger than the survival size, and the diameter and length of the rod are controlled. The tolerance range of the rod part 1 is 10mm, and the purpose is to use the tolerance range of the rod part 1 to control the length. Because the material used for the rod part 1 is certain, the tolerance of the rod part 1 moves up when the rod part 1 is long; the tolerance of the rod part 1 moves down when the rod part 1 is short, of course, the size must be within the tolerance range. Because the lifting rings are used in pairs, the tolerance of each pair is less than 3mm.

[0068] Step 2, then use the mold to round the big end 2 and the small end 3 of the single-arm su...

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Abstract

The invention discloses a method for die-forging a forging piece by adopting a single-arm hoisting ring for petroleum drilling. The method comprises the following steps of: drawing a rod part of a single-arm hoisting ring, firstly, carrying out rough rolling on the rod part, and controlling rod diameter size and length size; rolling the big end and the small end of the single-arm hoisting ring byusing a die; then flattening the big end and the small end of the single-arm hoisting ring, and punching a profiled hole; die-forging the big end and the small end of the single-arm hoisting ring; carrying out flash cutting on the big end and the small end of the single-arm hoisting ring and carrying out hammer flash cutting on a free forging hammer; punching inner hole connected scale for the big end and the small end of the single-arm hoisting ring out; rolling the rod part for the single-arm hoisting ring so that the diameter size of the final rod part and the final length size of the single-arm hoisting ring are obtained, and controlling a pairing length size; and leveling the big end and the small end of the single-arm hoisting ring, and straightening the rod part. According to the method disclosed by the invention, the yield of the single-arm hoisting arm is remarkably improved, and the requirement of a trimming process of the single-arm hoisting ring is completely met.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and relates to a processing method for a single-arm suspension ring die forging forging for an oil drill. Background technique [0002] The single-arm lifting ring used in oil drilling is a key accessory in the lifting equipment of the drilling rig. All lifting loads are borne by the lifting ring. The lifting ring must meet the requirements of API 8C, and the requirements for materials and mechanical properties are extremely strict. The material used for oil drills is 20SiMn2MoVA (or 20SiMn2MoVE). The series of single-arm lifting rings are 40 tons, 50 tons, 75 tons, 150 tons, 250 tons, 350 tons, 500 tons, 750 tons, and 1000 tons. The process is extremely complicated. When the big and small heads of the ring are forged by the die, they need to be trimmed on the hammer. Single-arm lifting rings are generally produced in batches, with many steps and high requirements for processi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02
Inventor 李伟阳高啸天孟瑞斌王德义康海鹏
Owner BAOJI PETROLEUM MASCH CO LTD
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