Forging Method of Small Gasoline Engine Connecting Rod

A small gasoline engine and connecting rod technology, applied in the field of mechanical forging, can solve the problems of poor tensile, impact and fatigue resistance, more equipment and processing personnel, and low steel utilization rate, etc., to achieve elongation and fatigue strength Improve and reduce the workload of mechanical processing, the effect of simple and feasible forging process

Active Publication Date: 2016-01-20
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

There are many shortcomings in the traditional manufacturing process of connecting rods, mainly including: poor tensile, impact and fatigue resistance, low steel utilization rate, high energy consumption, traditional connecting rod blank processing needs to cut round steel, heating, artificial Elongation deformation, heating, die forging, flash removal, sand blasting, low material utilization rate, multiple heating, high energy consumption, many processing steps, low precision and poor surface quality; numerous mechanical processing steps consume a lot of equipment And human resources: After forging, the size and head of the connecting rod are all blind holes. In addition, the forging precision is low and the surface is rough. After the connecting rod is forged, 17 machining processes are required; the production efficiency is low and the manufacturing cost is high: the traditional small gasoline engine connecting rod Processing from forging to finished products requires more than 20 processing procedures, low production efficiency, large workshop area, equipment consumption and many processing personnel, low efficiency and high manufacturing costs

Method used

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  • Forging Method of Small Gasoline Engine Connecting Rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A forging method for a connecting rod of a small gasoline engine, comprising the following steps: 1) Weighing raw materials; 2) Ball milling; 3) Powder compacting; 4) Sintering; 5) Cooling; 6) Spraying graphite powder; 7) Induction heating; 8 ) forging and demoulding; specifically include the following steps:

[0025] 1) Weigh raw materials: 1000 parts by weight of iron, 4 parts of titanium, 3 parts of nickel, 2 parts of manganese, 1 part of chromium, 3 parts of silicon carbide, 2 parts of titanium carbide, 2 parts of aluminum nitride, and 1 part of barium titanate 1 part, 1 part of zinc stearate, 1 part of talcum powder, 1 part of sodium silicate; 7 parts of graphite powder;

[0026] 2) Ball milling: mix iron, titanium, nickel, manganese, chromium, silicon carbide, titanium carbide, aluminum nitride and barium titanate to obtain mixture 1, add 0.1 times the weight of mixture 1 in water, and send it to a ball mill for ball milling to obtain 400 mesh powder, then spray-...

Embodiment 2

[0034] A forging method for a connecting rod of a small gasoline engine, comprising the following steps: 1) weighing raw materials; 2) ball milling; 3) powder compact; 4) sintering; 5) cooling; 6) spraying graphite powder; 7) induction heating; 8) Forging and demoulding; specifically include the following steps:

[0035] 1) Weigh raw materials: 1100 parts by weight of iron, 5 parts of titanium, 4 parts of nickel, 3 parts of manganese, 2 parts of chromium, 4 parts of silicon carbide, 3 parts of titanium carbide, 3 parts of aluminum nitride, and 2 parts of barium titanate 2 parts, 2 parts of zinc stearate, 2 parts of talcum powder, 2 parts of sodium silicate, 8 parts of graphite powder;

[0036] 2) Ball milling: Mix iron, titanium, nickel, manganese, chromium, silicon carbide, titanium carbide, aluminum nitride and barium titanate to obtain mixture 1, add 0.1 times the weight of the mixture 1 water, send it to the ball mill for ball milling, and obtain 400 mesh powder, then spr...

Embodiment 3

[0044] A forging method for a connecting rod of a small gasoline engine, comprising the following steps: 1) weighing raw materials; 2) ball milling; 3) powder compact; 4) sintering; 5) cooling; 6) spraying graphite powder; 7) induction heating; 8) Forging and demoulding; the above forging method specifically includes the following steps:

[0045]1) Weigh raw materials: 1200 parts by weight of iron, 6 parts of titanium, 4 parts of nickel, 3 parts of manganese, 2 parts of chromium, 4 parts of silicon carbide, 3 parts of titanium carbide, 3 parts of aluminum nitride, and 2 parts of barium titanate 2 parts, 2 parts of zinc stearate, 2 parts of talcum powder, 1 part of sodium silicate, 9 parts of graphite powder;

[0046] 2) Ball milling: mix iron, titanium, nickel, manganese, chromium, silicon carbide, titanium carbide, aluminum nitride and barium titanate to obtain mixture 1, add 0.1 times the weight of mixture 1 in water, and send it to a ball mill for ball milling to obtain 400...

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Abstract

The invention belongs to the field of mechanical forging, and discloses a forging method of a small gasoline engine connecting rod, comprising the following steps: 1) weighing raw materials; 2) ball milling; 3) powder compact; 4) sintering; 5) cooling; 6) spraying Graphite powder; 7) induction heating; 8) forging and demoulding. Compared with the prior art, the forging method greatly improves the performance of the connecting rod, improves the product quality, reduces the scrap rate, reduces the processing procedures, reduces industrial energy consumption, and simultaneously improves the production efficiency of the enterprise.

Description

technical field [0001] The invention belongs to the field of mechanical forging, and relates to a forging method of a gasoline engine connecting rod, in particular to a forging method of a small gasoline engine connecting rod. Background technique [0002] In the linkage mechanism, the two ends are respectively hinged with the driving and driven members to transmit motion and force. For example, in reciprocating piston power machines and compressors, connecting rods are used to connect the pistons and cranks. The connecting rod is mostly steel, and the cross-section of the main part is mostly circular or I-shaped. There are holes at both ends, and bronze bushings or needle bearings are installed in the holes, which are used for loading shaft pins to form hinges. The connecting rod is an important part in the automobile engine. It connects the piston and the crankshaft. Its function is to convert the reciprocating motion of the piston into the rotational motion of the cranks...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/14B22F3/16B22F1/00
CPCB22F3/17B23P15/14B22F2999/00B22F1/105B22F2303/01B22F2301/35B22F2303/05B22F2301/205B22F2301/15B22F2301/20B22F2302/105B22F2302/10B22F2302/20B22F2302/40B22F2302/45
Inventor 温以民刘强宋家杰顾为滕华超
Owner 临沂市金立机械有限公司
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