CN1071356A - Malleable forging method for alloy steel ingot - Google Patents
Malleable forging method for alloy steel ingot Download PDFInfo
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- CN1071356A CN1071356A CN 91107503 CN91107503A CN1071356A CN 1071356 A CN1071356 A CN 1071356A CN 91107503 CN91107503 CN 91107503 CN 91107503 A CN91107503 A CN 91107503A CN 1071356 A CN1071356 A CN 1071356A
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Abstract
The present invention is a kind of malleable forging method for alloy steel ingot, adopt multiaspect forge with by the square forging that necessarily becomes the rib requirement, finish the forging deformation of alloy steel ingot, the ingot casting forging to requiring size.Multiaspect is forged, and makes blank deformation even, and distortional stress is concentrated obviously and improved.Square forging is on the faceted pebble of square billet the bight of polygon section, thereby square billet surface quality, corner angle portion quality are significantly improved, and obtains satisfied forging effect.
The present invention can reduce final forging temperature, and enlargement deformation temperature range to 20-40% reduces the deformation drag, prolongs equipment life.Technology of the present invention is simple, is convenient to operation, is fit to the forging deformation of difficult wrought superalloy and steel.
Description
The present invention is a kind of malleable forging method for alloy steel ingot, is used for the hammer cogging distortion of alloy steel ingot.
Existing and disclosed alloy steel ingot hammer cogging adopts square forging deformation technology (Fig. 1).Square forging deformation at first forges into larger-size square base to steel alloy garden ingot, and then larger-size square base forged into the less square base of size, from the square base to the square base, at last from the square base to the garden base, be swaged into the blank (or finished product) that is of the required size.The alloy steel ingot deformation temperature scope of square forging is narrow, the temperature control difficulty increases, ingot casting is out of shape, fire time deflection is big, each position distortion is uneven, and as seen Fig. 1 is out of shape when reaching square, whole garden ingot deflection can reach 36%, the distortion at C place is near 30%, and two sides intersection deflection is minimum, and each deflection difference can reach 30%.Distortion is uneven, the stress distribution inequality, and bight stress is concentrated particularly serious, therefore cause square billet surface, corner crack serious, make to be present in the expanding easily, worsens of ingot casting surface already, and make the waste product increase such as defectives such as pore, slag blister, lumber recovery descends, and cost rises.
The present invention improves according to the deficiency of existing square Forging Technology, provides a kind of and existing forging method different, is applicable to the forging method of alloy steel ingot.Forging method after the improvement is a kind of toughness forging method, and the present invention adopts multiaspect to forge and becomes rib to meet necessarily required square forging, and multiaspect is forged and organically combination of square forging, thereby has obtained satisfied forging effect.
Main points of the present invention be malleable forging method for alloy steel ingot comprise multiaspect forge with by certain square forging that becomes the rib requirement.Multiaspect is forged, and its face number should meet 8 above even number faces, advances iron amount 10-15mm, forges through 1-3 multiaspect, makes the forging stock surface obtain the areal deformation layer of 10-25mm, and the ingot casting forging temperature is 900-1200 ℃.Multiaspect is carried out square forging after forging, and each bar in formed four ribs forges formed rib with former multiaspect and do not overlap, and makes former multiaspect forge formed rib (bight) and is in the square billet facial positions.
Fig. 2 is the malleable forging method for alloy steel ingot flow chart.
The present invention and existing square Forging Technology relatively have and are out of shape even, stress distribution advantage of uniform, and have the big advantage of forging range concurrently.The present invention can make forging stock surface, corner crack significantly reduce, and rib portion quality significantly improves, and can reduce the resistance of deformation and the final forging temperature of less-deformable alloy, enlargement deformation temperature range.Compare with prior art, forging temperature can enlarge 20-40%, prolongs equipment life, improves lumber recovery, reduces production costs.
Following example is used to illustrate the present invention, is concrete enforcement of the present invention.
Shown in Figure 2, malleable forging method for alloy steel ingot comprises: multiaspect is forged (a-b), square forging (b-c).
With the nickel-base alloy is example, the forging deformation of alloy, at first alloy garden ingot is swaged into octagon (section), make into iron amount≤10-15mm, form 10-25mm areal deformation layer, then the one-tenth rib requirement by square forging becomes square billet with octagon section blank forging, through time distortion of many fire, square billet is swaged into the garden base (or finished product) that is of the required size again.Ingot casting or blank forging temperature are 900-1200 ℃.Fire time deflection is 21-40%.
Tens of nickel-base alloy ingots that adopt the present invention to produce are swaged into rod, and the alloy surface quality is good, and lumber recovery improves 10-20%, and mechanical performance improves obviously.
See the following form:
Claims (3)
1, malleable forging method for alloy steel ingot is characterized in that the toughness forging deformation is forged by multiaspect and square forging is formed.
2, by the described toughness forging deformation of claim 1 method, it is characterized in that the face number that multiaspect is forged, be 8 above even number faces, advance iron amount≤10-15mm, forging temperature is 900 ℃-1200 ℃.
3,, it is characterized in that formed rib of square forging and former multiaspect forge formed rib and do not overlap by the described toughness forging method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107503 CN1071356A (en) | 1991-10-09 | 1991-10-09 | Malleable forging method for alloy steel ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91107503 CN1071356A (en) | 1991-10-09 | 1991-10-09 | Malleable forging method for alloy steel ingot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1071356A true CN1071356A (en) | 1993-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91107503 Pending CN1071356A (en) | 1991-10-09 | 1991-10-09 | Malleable forging method for alloy steel ingot |
Country Status (1)
| Country | Link |
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| CN (1) | CN1071356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893725A (en) * | 2020-12-29 | 2021-06-04 | 常州中钢精密锻材有限公司 | Method for improving surface quality of titanium alloy forging |
-
1991
- 1991-10-09 CN CN 91107503 patent/CN1071356A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893725A (en) * | 2020-12-29 | 2021-06-04 | 常州中钢精密锻材有限公司 | Method for improving surface quality of titanium alloy forging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |