CN104325052B - A kind of without magnetic stabilizer Forging Technology - Google Patents
A kind of without magnetic stabilizer Forging Technology Download PDFInfo
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- CN104325052B CN104325052B CN201410551881.6A CN201410551881A CN104325052B CN 104325052 B CN104325052 B CN 104325052B CN 201410551881 A CN201410551881 A CN 201410551881A CN 104325052 B CN104325052 B CN 104325052B
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Abstract
The present invention relates to a kind of without magnetic stabilizer Forging Technology, the step of this technique is as follows: step S01: hydraulic press cogging is forged: utilizing 5000 tons of hydraulic presses to carry out early stage cogging work, the pulling of big step is to heat, by two ends and small stair forging and molding；Step S02: precise forging machine strengthening forging: by 1400 tons of precise forging machine forging and moldings, carry out drawing beating or pushing away after taking the clamping of A, B jaw and beat, small stair is forged to preformation base size, when temperature is down to below 750 DEG C, forging step small in ends to target size, final forging temperature is not less than 600 DEG C；Step S03: hydraulic press strengthening forging: reinforced portion non-to forging surface quickly forges, light pressure, and deflection 5～10%, final forging temperature is not less than 500 DEG C；Step S04: Physico-chemical tests.The present invention provide a kind of by utilize hydraulic press and precise forging machine combined forging produce each several part mechanical property uniformly, have the Forging Technology without magnetic stabilizer without magnetic stabilizer of preferable magnetic property.
Description
Technical field
The invention belongs to technical field of forging, relate to a kind of without magnetic stabilizer Forging Technology.
Background technology
Along with the development of China Petroleum and improving constantly of drilling technology thereof, the demand without magnetic stabilizer of all size is increased year by year, owing to being shaped like in shuttle shape without magnetic stabilizer, step broad in the middle is bigger with the step difference of step small in ends, the basically identical relatively difficulty of performance indications of each several part to be ensured, working hardening operates and is less susceptible to, add this steel grade resistance of deformation at low temperatures bigger, careless slightly it is possible to make product rejection, therefore the manufacture for product proposes the highest requirement, need import could meet use requirement without magnetic stabilizer is substantially all needed for domestic.
The big specification of traditional mode of production without the method for magnetic stabilizer is: according to regulator Part Drawing Design forging drawing, completely by hydraulic press forging and molding.Owing to the adjacent great Tai without magnetic stabilizer is bigger with the step difference of little, and forging manipulator clamping forge piece size range is limited, little surplus is the biggest, for preventing bias, it could even be possible to increase transition shoulder, additionally, due to nonmagnetic steel self character in forging process, deflection is not too large every time, needs many fire time just can complete forging, and this mode of production production cost is higher.
Summary of the invention
It is an object of the invention to overcome above-mentioned of the prior art not enough provide a kind of by utilize hydraulic press and precise forging machine combined forging produce each several part mechanical property uniformly, have preferable magnetic property, relative permeability is relatively low, intercrystalline corrosion the is qualified Forging Technology without magnetic stabilizer without magnetic stabilizer.
The technical scheme is that and be achieved in that: a kind of without magnetic stabilizer Forging Technology, the step of this technique is as follows:
Step S01: hydraulic press cogging is forged: utilizing 5000 tons of hydraulic presses to carry out the cogging work of early stage jumping-up, pulling, the pulling of big step is to heat 710, by two ends 538 and 457 small stair forging and molding；
Step S02: precise forging machine strengthening forging: by 1400 tons of precise forging machine forging and moldings, carry out drawing beating or pushing away after taking the clamping of A, B jaw and beat, small stair is forged to preformation base size, preformation base size surplus of reserved 10%～30% compared with target size, when temperature is down to below 800 DEG C, carrying out precise forging machine strengthening forging, forge step small in ends to target size, final forging temperature is not less than 600 DEG C；
Step S03: hydraulic press strengthening forging: reinforced portion non-to forging surface quickly forges, light pressure, and deflection 5%～10%, final forging temperature is not less than 500 DEG C；
Step S04: Physico-chemical tests: forging carries out forging rear annealing, inspection, ultrasonic examination, sawing and test materials and cuts after terminating.
nullThe good effect that technical scheme produces is as follows: the Forging Technology without magnetic stabilizer of the present invention，First with the advantage that hydraulic press consolidation effect is good，Steel ingot or ESR ingot are carried out jumping-up、Pulling、Forging preformation base，Reach the effect of crystal grain thinning，Big step is that φ 710(leaves forging surplus)，For preventing bias，Increase by the transition shoulder of 540，Then utilize precise forging machine Forging Equipment Speed fast、Deformation is uniformly、Forging's block dimension precision is high、The advantage that surface quality is good，In the forging range of regulation，Step small in ends is rapidly completed forging and enhanced deformation，Guarantee the uniformity of mechanical property and magnetic property，Forging's block dimension deviation controls within ± 3mm，Precise forging machine is additionally used to carry out later stage forging and molding，3～5 forging times can be saved，It is effectively reduced heating and forging time，While improving production efficiency，It is greatly reduced forging cost.The present invention makes full use of the advantage of various forging equipment, and the forging each several part mechanical property of production is uniform, and relative permeability is relatively low, intercrystalline corrosion is qualified, and considers from the angle of lean production, the forging method of the present invention more economically, science.
Accompanying drawing explanation
Fig. 1 is the structural representation in the present invention without magnetic stabilizer.
Fig. 2 be in the embodiment of the present invention after step one cogging is forged the structural representation of workpiece.
Detailed description of the invention
A kind of without magnetic stabilizer Forging Technology, according to the part drawing without magnetic stabilizer described in Fig. 1, consider hydraulic press and precise forging machine forging situation, determine the forging surplus of big step and small stair respectively, appropriate design forging drawing, so that it is determined that forge weight, steel ingot or ESR ingot weight.Produce model be 26 ＂ × 9-1/2 ＂ × 120 ＂ without magnetic stabilizer, the step of Forging Technology is as follows:
Step S01: hydraulic press cogging is forged: entering stove by 7.2 tons without magnetic ESR ingot and be heated to 1200 DEG C, be incubated 8 hours, jumping-up is to 1200 on 5000 tons of hydraulic presses, then pulls out 710, then indentation, by two ends 538 and 457 small stair forging and molding, as shown in Figure 2；
Step S02: precise forging machine strengthening forging: by 1400 tons of precise forging machine forging and moldings, carry out drawing beating or pushing away after taking the clamping of A, B jaw and beat, respectively step small in ends is forged, reserved 20% surplus, when temperature is down to 750 DEG C, carrying out precise forging machine strengthening forging, forge step small in ends to target size, final forging temperature is not less than 600 DEG C；
Step S03: hydraulic press strengthening forging: reinforced portion non-to forging surface quickly forges, light pressure, deflection 8%, and final forging temperature is not less than 500 DEG C；
Step S04: Physico-chemical tests: ultrasonic examination detection is qualified, mechanical property, intercrystalline corrosion, hardness and magnetic property detection is carried out respectively in the section of forging small stair extending part, testing result is: yield strength 860MPa, tensile strength 980MPa, percentage elongation 35%, the contraction percentage of area 74.5%, ballistic work are 295/288/300, Brinell hardness 311HBW, intercrystalline corrosion are qualified, pcrmeability 1.0022.
Claims (1)
1., without a magnetic stabilizer Forging Technology, the step of this technique is as follows:
Step S01: hydraulic press cogging is forged, enter stove by 7.2 tons without magnetic ESR ingot and be heated to 1200 DEG C, be incubated 8 hours, utilize 5000 tons of hydraulic presses to carry out the cogging work of early stage jumping-up, pulling, big step pulls out to 710, and big step two ends are forged 538 and 457 small stairs respectively；
Step S02: precise forging machine strengthening forging: by 1400 tons of precise forging machine forging and moldings, carry out drawing beating or pushing away after taking the clamping of A, B jaw and beat, two ends 457 small stair is all forged to preformation base size, preformation base size surplus of reserved 10%～30% compared with target size, when temperature is down to below 800 DEG C, carry out precise forging machine strengthening forging, above-mentioned two ends have been forged to preformation base size small stair forge to target size, final forging temperature is not less than 600 DEG C；
Step S03: hydraulic press strengthening forging: reinforced portion non-to forging surface quickly forges, light pressure, and deflection 5%～10%, final forging temperature is not less than 500 DEG C；
Step S04: Physico-chemical tests: forging carries out forging rear annealing, inspection, ultrasonic examination, sawing and test materials and cuts after terminating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410551881.6A CN104325052B (en) | 2014-10-17 | 2014-10-17 | A kind of without magnetic stabilizer Forging Technology |
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| CN201410551881.6A CN104325052B (en) | 2014-10-17 | 2014-10-17 | A kind of without magnetic stabilizer Forging Technology |
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| CN104325052A CN104325052A (en) | 2015-02-04 |
| CN104325052B true CN104325052B (en) | 2016-08-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105196008A (en) * | 2015-11-02 | 2015-12-30 | 太原理工大学 | Manufacturing method of high-strength return plate |
| CN107913964A (en) * | 2017-11-24 | 2018-04-17 | 中原特钢股份有限公司 | A kind of forging method of no magnetic centralizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS58167724A (en) * | 1982-03-26 | 1983-10-04 | Kobe Steel Ltd | Method of preparing blank useful as stabilizer for drilling oil well |
| CN1038353C (en) * | 1993-09-11 | 1998-05-13 | 中国科学院金属研究所 | Steel for high-strength non-magnetic drill collar |
| CN101660109A (en) * | 2009-09-26 | 2010-03-03 | 河南神龙石油钻具有限公司 | Novel steel for non-magnetic drill collar and preparation method thereof |
| CN102676944A (en) * | 2011-03-08 | 2012-09-19 | 上海海隆石油管材研究所 | Nonmagnetic steel for drilling tool and its preparation method |
| CN103817283B (en) * | 2012-11-16 | 2015-12-02 | 中原特钢股份有限公司 | A kind of forged shaft and forging production technique thereof |
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Effective date of registration: 20180806 Address after: 459000 531 Industrial Park, Tiger Hill Industrial Cluster, Jiyuan City, Jiaozuo, Henan Patentee after: Henan Zhongyuan special steel equipment manufacturing Co., Ltd. Address before: 459000 Xiao Zhai, Jiyuan Town, Jiyuan City, Henan Patentee before: Zhongyuan Special Steel Co., Ltd. |
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