CN102189205A

CN102189205A - Forging processing method

Info

Publication number: CN102189205A
Application number: CN2011100850572A
Authority: CN
Inventors: 丁其华
Original assignee: ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING CO Ltd
Current assignee: ZHANGJIAGANG CITY GUANGDA MACHINERY FORGING CO Ltd
Priority date: 2011-04-06
Filing date: 2011-04-06
Publication date: 2011-09-21

Abstract

The invention discloses a forging processing method. The method comprises the following steps: A) heating a steel ingot, forging the steel ingot into a blank, and forming two through holes on the blank; B) cutting a seam between the two through holes, opening the seam and heating the blank in a furnace to a forging temperature; C) providing multiple core rods with different diameters, taking the blank out of the furnace, threading the core rod with relatively small diameter into the seam, and hammering the edge angles on a saddle support; when the seam turns bigger, placing the blank on a flat anvil flatwise and leveling; and threading the core rod with relatively large diameter into the seam, and forging on the saddle support again; and D) putting a hollow punch with taper in a blank hole, arranging a drain cap below the blank, and expanding and rounding the hole finally. By the method, the utilization rate of raw materials can be improved; and the method is favorable for batch production.

Description

A kind of forging processing method

Technical field

The present invention relates to a kind of processing method, be specifically related to a kind of forging processing method.

Background technology

Connecting rod forging as shown in Figure 2, cause is not an annular forging piece, need be provided with a bossy body in the left side of ring is used for being connected with plunger, and in order to guarantee enough bonding strengths, general bossy body and ring are integrated, so structure makes that the forging difficulty is bigger, perhaps can't forge by in the past forging method, certainly in the prior art, people use imitative type cutting machine usually steel plate cutting are made this kind other than ring type forge piece blank reheating, yet make forge piece blank reheating with this kind method, the utilization rate of steel plate is not high, for example with long 1850mm, and wide 1350mm, thick 130mm steel plate is processed cutting with imitative type cutting machine, used steel plate weight is 2.55T, has only 0.75T and forge piece blank reheating adds fire consumption, so steel utilization ratio has only 29.4%, the steel plate waste is bigger, is unfavorable for producing in batches; And imitate type when cutting with steel plate, the fiber flow direction of metal is cut off, reduced mechanical property, plasticity and the impact flexibility of metal.

Therefore, be necessary to provide a kind of forging processing method that can overcome above-mentioned defective.

Summary of the invention

A technical problem to be solved by this invention is: provide a kind of stock utilization high forging processing method.

For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of forging processing method, and its procedure of processing is: A) with being swaged into blank after the steel ingot heating, offer two through hole then on blank; B) between two through hole, chop up one and cut seam, then will cut seam and strut, then blank is put into stove heating with till reaching forging temperature; C) plug that provides several diameter dimensions not wait, blank is taken out from stove, the plug that diameter dimension is less pierces into and cuts seam earlier, go up saddle support then, again corner angle are forged, when cut seam become big after, blank lain on the flat anvil claps, and then the plug that diameter dimension is bigger penetrates and cuts seam, and last saddle support forges again; D) put in the blank hole with the hollow punch that has tapering at last, the blank below is lined with drain cap, and reaming, rounding are carried out in the hole.

Beneficial effect of the present invention: by above-mentioned forging processing method, make that the utilization rate of material is higher, help producing in batches.

Description of drawings

Fig. 1 is the schematic diagram of blank among the present invention.

Fig. 2 is the vertical view of connecting rod.

Fig. 3 is the cut-away view along A-A line shown in Figure 2.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing and embodiment, but the present invention should not only limit to embodiment.

See also Fig. 2 and Fig. 3, a kind of connecting rod 100, it comprises ring part 1 and the protuberance 2 that protrudes out from ring part 1, and the central authorities of described ring part 1 have a circular hole 10, and the end of described protuberance 2 is provided with curved portions 20.

The connecting rod of making the ring part external diameter and be 1300 mm, Circularhole diameter and be 1000 mm will produce uses following procedure of processing:

Steps A: provide a blank 3(to see also Fig. 1), described blank 3 is swaged into after being heated by steel ingot, described blank 3 comprises body 30 and the protuberance 31 that protrudes out from body 30 1 ends, the central authorities of described body 30 have two elliptical apertures 32, the elliptical aperture major axis dimension is roughly 200 ± 2mm, oval minor axis dimension is roughly 150 ± 2mm, is formed with corner angle 33 around the described body 30;

B) provide straight line marking knife, arc marking knife and triangle contract, between two elliptical apertures, chop up one with the straight line marking knife earlier and cut seam 34, to cut seam 34 with the triangle contract then struts, with the arc marking knife end of protuberance 31 is cut a curved portions 35 again, then blank 3 is put into stove heating with till reaching forging temperature;

C) blank 3 is taken out from stove, with diameter is that first plug of 250 ± 2mm penetrates and cuts the seam back and go up saddle support, at first corner angle 33 are forged, and it is consistent as far as possible to make every effort on the circumference width, when aperture size reaches 500 mm～600 mm, blank is lain on the flat anvil clap again, THICKNESS CONTROL is at 130 ± 2 mm, then 500 mm plugs are penetrated, last saddle support forges again, still requires on the circumference width uniformity of trying one's best.Aperture size is controlled at about 970 mm～980 mm, pat on hammering block as the bad extraction plug of roundness, till the range estimation roundness is satisfied, then blank is lain on the flat anvil and clap, thickness still is controlled at 130 ± 2 mm, is that 990 mm and tapering are that 15 ± 1 hollow punches of spending are put in the hole with diameter at last, and hole of pad, blank below is greater than the drain cap of Φ 1000, reaming, rounding are carried out in the hole.

By above-mentioned forging processing method, can produce the connecting rod of shape as shown in Figure 2, this forging processing method makes that raw-material utilization rate is higher, helps producing in batches.

Claims

1. one kind is forged processing method, and it comprises following procedure of processing:

A) with being swaged into blank after the steel ingot heating, on blank, offer two through hole then;

B) between two through hole, chop up one and cut seam, then will cut seam and strut, then blank is put into stove heating with till reaching forging temperature;

C) plug that provides several diameter dimensions not wait, blank is taken out from stove, the plug that diameter dimension is less pierces into and cuts seam earlier, go up saddle support then, again corner angle are forged, when cut seam become big after, blank lain on the flat anvil claps, and then the plug that diameter dimension is bigger penetrates and cuts seam, and last saddle support forges again;

D) put in the blank hole with the hollow punch that has tapering at last, the blank below is lined with drain cap, and reaming, rounding are carried out in the hole.

2. a kind of forging processing method as claimed in claim 1 is characterized in that: the described through hole steps A) is an elliptical aperture.