CN109940057A - The anti-oxidation heating means of blind hole blank inner surface - Google Patents
The anti-oxidation heating means of blind hole blank inner surface Download PDFInfo
- Publication number
- CN109940057A CN109940057A CN201910198828.5A CN201910198828A CN109940057A CN 109940057 A CN109940057 A CN 109940057A CN 201910198828 A CN201910198828 A CN 201910198828A CN 109940057 A CN109940057 A CN 109940057A
- Authority
- CN
- China
- Prior art keywords
- blind hole
- oxidation
- intermixture
- blank
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of heating means that blind hole blank inner surface is anti-oxidation, comprising: in the anti-oxidation intermixture of blind hole internal surface brushing of blind hole blank, blind hole blank is placed in heating furnace, places carbon dust on the steel plate of blind hole lower part；Blind hole covers on coke blacking；For heating furnace during heating blind hole blank, anti-oxidation intermixture and air form oxygen-proof property atmosphere in blind hole, prevent the inner surface of blind hole from forming the oxide skin for influencing extrusion molding.The present invention can slow down the blind hole internal surface oxidation of blind hole blank, prevent from forming oxide skin.
Description
Technical field
The present invention relates to a kind of hot-working process, specifically, are related to a kind of heating side that blind hole blank inner surface is anti-oxidation
Method.
Background technique
With the successful operation of Chinese large-sized extruder, changing previous forging bar, along axis jacking to prepare big specification deeply blind
The method of hole blank, and the method that big specification depth blind hole product is made directly is squeezed using blind hole blank.
Ordinary circumstance, from economic considerations, using heated by natural gas stove heating blank-removing surface scale-spraying
Glass lubricant is placed into extrusion position and is squeezed.But big specification blind hole blank is aoxidized in hot lower removing inner hole
The skin time is long, surface cooling is big, and existence conditions are not able to satisfy the requirement that deep blind hole squeezes.
Summary of the invention
Technical problem solved by the invention is to provide one kind, and the anti-oxidation heating means of blind hole blank inner surface can
The blind hole internal surface oxidation for slowing down blind hole blank, prevents from forming oxide skin.
A kind of heating means that blind hole blank inner surface is anti-oxidation, comprising:
In the anti-oxidation intermixture of blind hole internal surface brushing of blind hole blank, blind hole blank is placed in heating furnace, blind
Carbon dust is placed on the steel plate of hole lower part, blind hole covers on coke blacking；
For heating furnace during heating blind hole blank, anti-oxidation intermixture and air form oxygen-proof property gas in blind hole
Atmosphere prevents the inner surface of blind hole from forming the oxide skin for influencing extrusion molding.
Further, anti-oxidation intermixture is mixed using carbon dust, the mixture of molybdenum disulfide and machine oil, carbon dust with molybdenum disulfide
Agent proportion are as follows: 1:2~1:1, machine oil are anti-oxidation intermixture weight 5-15%.
Further, it is equipped with anti-oxidation intermixture according to blind hole surface area, the dosage of anti-oxidation intermixture is 2kg/m2。
Further, anti-oxidation intermixture is brushed to blank blind hole internal surface with a thickness of 1~3mm.
Further, C >=80% of powdered carbon, carbon dust the largest particles diameter≤5mm, carbon dust placement amount are true according to blind hole internal surface
Fixed, carbon dust dosage is 1Kg/m2。
Further, heating furnace uses gas heating furnace, and steel plate is lain in a horizontal plane in the inside of heating furnace body at room temperature,
The depth of parallelism of steel plate is ± 10 °；It is placed with refractory brick in the outer surface edge that blind hole blank is in contact with steel plate, is added for slowing down
Hot stove furnace body internal oxidition gas flows into blind hole.
The technology of the present invention effect includes:
The present invention slows down blind hole internal surface oxidation, after making heating by forming the atmosphere based on reproducibility in blind hole
Blank inner surface have the condition for directly carrying out glass lubrication after heated by natural gas stove heating is come out of the stove, avoid using high cost
Protective atmosphere resistance heating stove heating, and then low cost, produce big specification depth blind hole product in high quality.
Detailed description of the invention
Fig. 1 is the heating means schematic diagram that blind hole blank inner surface is anti-oxidation in the present invention.
Specific embodiment
Be described below and specific embodiments of the present invention be fully shown, with enable those skilled in the art to practice and
It reproduces.
As shown in Figure 1, being the heating means schematic diagram that blind hole blank inner surface is anti-oxidation in the present invention.
The anti-oxidation heating means of blind hole blank inner surface, specifically includes the following steps:
Step 1: in the anti-oxidation intermixture of blind hole internal surface brushing of blind hole blank 5, blind hole blank is put into heating furnace
5, carbon dust is placed on the steel plate 2 of blind hole lower part；The blind-hole bottom of blind hole blank 5 covers the coke blacking 4 on steel plate upwards；
Heating furnace uses gas heating furnace, and steel plate 2 is lain in a horizontal plane in heating furnace by (furnace temperature is not higher than 50 DEG C) at room temperature
The inside of furnace body 1, geometric dimension 2000mm × 2000mm × 50mm (length × width x thickness) of steel plate 2, the depth of parallelism ± 10 °；According to
Blind hole diameter size is heated, places a certain amount of powdered carbon 4 (C >=80% of powdered carbon 4, carbon dust the largest particles diameter in 2 center of steel plate
≤ 5mm, carbon dust placement amount determine that carbon dust dosage is 1Kg/m according to blind hole internal surface2).The blind-hole bottom of blind hole blank 5 is upward,
The coke blacking 4 on steel plate is covered, then a circle refractory brick 3 is placed in the outer surface edge that steel ingot is in contact with steel plate, for subtracting
Slow 1 internal oxidition gas of heating furnace body flows into blind hole.
Anti-oxidation intermixture uses carbon dust, molybdenum disulfide and machine oil mixture.According to the blind hole surface area S of blind hole blank 5
It is equipped with anti-oxidation intermixture, the dosage of anti-oxidation intermixture is 2kg/m2.Carbon dust and molybdenum disulfide intermixture match are as follows: and 1:2~
1:1 is put into after stirring in the machine oil of anti-oxidation intermixture weight 5-15% and forms anti-oxidation intermixture.
Blind hole internal surface should have visual visible metallic luster, then at room temperature uniformly brush anti-oxidation intermixture to blank
Blind hole internal surface, 1~3mm of coating layer thickness.
Step 2: for heating furnace during heating blind hole blank 5, anti-oxidation intermixture and air form oxygen in blind hole
The property changed atmosphere prevents the inner surface of blind hole from forming the oxide skin for influencing extrusion molding.
It is realized in heating process and forms reducing atmosphere inside blind hole, slow down the degree of oxidation of blind hole internal surface.
Embodiment 1
It is the blind hole blank 5 of Φ 930 × 360 × 1200 (outer diameter × internal diameter × blank height, blind hole depth 960mm) to specification
Inner surface carry out anti-oxidation heating.
1, smelt casting material be WB36, one, refining steel ingot of 7 tons of weights, be prepared into the blind hole of Φ 930 × 360 × 1200
Blank, and blind hole internal surface is machined to exposure visually visible metallic luster；
2, anti-oxidation intermixture preparation；
Blind hole internal surface accumulates about 1.2m2, it is equipped with carbon dust and molybdenum disulfide intermixture 2.5kg (carbon dust and molybdenum disulfide quality
Than 1:2~1:1).
3, anti-oxidation intermixture is uniformly brushed at room temperature to blank blind hole internal surface, inoxidzable coating thickness about 1.5mm；
4, in heated by natural gas furnace bottom, it is horizontally arranged the thick steel plate of 2000mm × 2000mm × 50mm (length × width x thickness)
2；
5, the 1.2kg carbon dust 4 of C=90%, the largest particles diameter about 3-4mm are placed on 2 central location of steel plate；
6, the blind bottom end of blind hole blank 5 is upward, then the carbon dust 4 being buckled on steel plate connects in blind hole blank 5 with steel plate
The outer surface edge of touching places a circle refractory brick 3, slows down heating furnace internal oxidition gas and flows into blank blind hole；
7, it is heated according to heating process, comes out of the stove, observed in blind hole blank after the high temperature section heat preservation 6h that 1200 DEG C of high temperature
It is deeply blind to smoothly complete the big specification of first branch according to technique process without visual visible oxide skin in 3.6 ten thousand tons of vertical extruders for surface
Hole product squeezes manufacture.
The present invention can use at low cost gas heating furnace realize the internal diameter d of iron and ferroalloy material for 100~
The specification large size blind hole blank heating function of 1000mm, blind hole depth h≤1800mm, squeezing deep blind hole inner hole without dephosphorization becomes existing
It is real.Wall thickness t=100~500mm of blind hole blank 5.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any above-mentioned
Details, and should widely explaining within the spirit and scope of the appended claims, thus fall into claim or its etc.
Whole change and modification in effect range all should be appended claims and be covered.
Claims (6)
1. a kind of heating means that blind hole blank inner surface is anti-oxidation, comprising:
In the anti-oxidation intermixture of blind hole internal surface brushing of blind hole blank, blind hole blank is placed in heating furnace, under blind hole
Carbon dust is placed on the steel plate in portion, blind hole covers on coke blacking；
For heating furnace during heating blind hole blank, anti-oxidation intermixture and air form oxygen-proof property atmosphere in blind hole, prevent
Only the inner surface of blind hole forms the oxide skin for influencing extrusion molding.
2. the anti-oxidation heating means of blind hole blank inner surface as described in claim 1, which is characterized in that anti-oxidation intermixture is adopted
With the mixture of carbon dust, molybdenum disulfide and machine oil, carbon dust and molybdenum disulfide intermixture are matched are as follows: 1:2~1:1, machine oil are oxygen
Change intermixture weight 5-15%.
3. the anti-oxidation heating means of blind hole blank inner surface as described in claim 1, which is characterized in that according to blind hole surface area
It is equipped with anti-oxidation intermixture, the dosage of anti-oxidation intermixture is 2kg/m2。
4. the anti-oxidation heating means of blind hole blank inner surface as described in claim 1, which is characterized in that anti-oxidation intermixture brush
Be coated onto blank blind hole internal surface with a thickness of 1~3mm.
5. the anti-oxidation heating means of blind hole blank inner surface as claimed in claim 2, which is characterized in that C >=80% of powdered carbon,
Carbon dust the largest particles diameter≤5mm, carbon dust placement amount determine that carbon dust dosage is 1Kg/m according to blind hole internal surface2。
6. the anti-oxidation heating means of blind hole blank inner surface as described in claim 1, which is characterized in that heating furnace is using natural
Steel plate, is lain in a horizontal plane in the inside of heating furnace body by gas heating furnace at room temperature, and the depth of parallelism of steel plate is ± 10 °；In blind hole base
Expect that the outer surface edge being in contact with steel plate is placed with refractory brick, flows into blind hole for slowing down heating-furnace vivo oxidation gas
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198828.5A CN109940057A (en) | 2019-03-15 | 2019-03-15 | The anti-oxidation heating means of blind hole blank inner surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198828.5A CN109940057A (en) | 2019-03-15 | 2019-03-15 | The anti-oxidation heating means of blind hole blank inner surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109940057A true CN109940057A (en) | 2019-06-28 |
Family
ID=67010101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910198828.5A Pending CN109940057A (en) | 2019-03-15 | 2019-03-15 | The anti-oxidation heating means of blind hole blank inner surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109940057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355076A (en) * | 2020-11-17 | 2021-02-12 | 金川集团股份有限公司 | Heating method of hollow ingot |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB420939A (en) * | 1933-09-21 | 1934-12-11 | John Robertson Co Inc | Improvements in and relating to apparatus for method of making metal sheaths for cables |
| CN101811149A (en) * | 2010-04-14 | 2010-08-25 | 新兴铸管股份有限公司 | Manufacturing method of high alloy seamless steel tube |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
| CN103341523A (en) * | 2013-07-16 | 2013-10-09 | 南京三邦金属复合材料有限公司 | Swelling pressure forming and manufacturing method of zirconium corrugated pipe |
| CN103769433A (en) * | 2014-01-06 | 2014-05-07 | 山西太钢不锈钢股份有限公司 | Production method for stainless steel pipe for photo-thermal power generation |
| CN105396895A (en) * | 2015-11-27 | 2016-03-16 | 中国船舶重工集团公司第七二五研究所 | Hot rolling machining method for titanium and titanium alloy seamless oil pipe |
| CN106041090A (en) * | 2016-07-18 | 2016-10-26 | 安徽奥泰粉末冶金有限公司 | Powder metallurgical lock cylinder pulling head and production process thereof |
-
2019
- 2019-03-15 CN CN201910198828.5A patent/CN109940057A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB420939A (en) * | 1933-09-21 | 1934-12-11 | John Robertson Co Inc | Improvements in and relating to apparatus for method of making metal sheaths for cables |
| CN101811149A (en) * | 2010-04-14 | 2010-08-25 | 新兴铸管股份有限公司 | Manufacturing method of high alloy seamless steel tube |
| CN102463272A (en) * | 2010-11-08 | 2012-05-23 | 北京有色金属研究总院 | Short-flow preparation method of minor-caliber nickel-based alloy thin-wall tubes |
| CN103341523A (en) * | 2013-07-16 | 2013-10-09 | 南京三邦金属复合材料有限公司 | Swelling pressure forming and manufacturing method of zirconium corrugated pipe |
| CN103769433A (en) * | 2014-01-06 | 2014-05-07 | 山西太钢不锈钢股份有限公司 | Production method for stainless steel pipe for photo-thermal power generation |
| CN105396895A (en) * | 2015-11-27 | 2016-03-16 | 中国船舶重工集团公司第七二五研究所 | Hot rolling machining method for titanium and titanium alloy seamless oil pipe |
| CN106041090A (en) * | 2016-07-18 | 2016-10-26 | 安徽奥泰粉末冶金有限公司 | Powder metallurgical lock cylinder pulling head and production process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112355076A (en) * | 2020-11-17 | 2021-02-12 | 金川集团股份有限公司 | Heating method of hollow ingot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103962411B (en) | A kind of manufacture method of GH3600 alloy fine thin-wall seamless pipe | |
| EP3381579B1 (en) | Method of producing forged product | |
| CN109940057A (en) | The anti-oxidation heating means of blind hole blank inner surface | |
| CN105803301A (en) | Shell mold casting process | |
| CN108715971A (en) | Iron-chromium-aluminum alloy vacuum smelting process | |
| CN204867261U (en) | Large -scale axle journal class forging forges mould | |
| CN206069980U (en) | A kind of copper annealing protection device | |
| CN105154183A (en) | Method for preparing powder metallurgy lubricants | |
| CN111168037B (en) | Stainless steel/carbon steel composite pipe and manufacturing process thereof | |
| CN105369139B (en) | The rollcogging-roll and its manufacture method of a kind of specific alloy half steel material | |
| CN217604651U (en) | Safe emergency treatment furnace for smelting crucible | |
| CN110129646B (en) | Chromium-based alloy heat-resistant sliding block and preparation method thereof | |
| CN107287395B (en) | A kind of trolley type annealing furnace | |
| CN106834762B (en) | A kind of vacuum melting device of intermetallic Ni-Al compound | |
| CN103212946B (en) | Machining method of gas radiation pipe | |
| CN104513887B (en) | A kind of trolley resistance furnace method for annealing to polishing roll | |
| CN103962526A (en) | Method for casting ductile iron roller in grooved mode | |
| CN108637232B (en) | Molten metal heating and heat-preserving device and heating and heat-preserving method | |
| CN109174990B (en) | Titanium alloy hot pressing heating mechanism and method | |
| CN203330390U (en) | Steel ladle baking device | |
| CN104891787A (en) | Forming unit and method of optical glass | |
| CN204912670U (en) | Online baking equipment of shell for vacuum induction furnace precision casting | |
| CN205996183U (en) | A kind of iron-based prealloy powder melting tundish insulation construction | |
| CN216938348U (en) | Molten metal heat preservation furnace for processing aluminum alloy die casting | |
| CN210004758U (en) | magnesium alloy smelting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190628 |