CN109794556A - A kind of bender lower die production method - Google Patents
A kind of bender lower die production method Download PDFInfo
- Publication number
- CN109794556A CN109794556A CN201910136624.9A CN201910136624A CN109794556A CN 109794556 A CN109794556 A CN 109794556A CN 201910136624 A CN201910136624 A CN 201910136624A CN 109794556 A CN109794556 A CN 109794556A
- Authority
- CN
- China
- Prior art keywords
- lower die
- blank
- content
- temperature
- processed
- 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
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
A kind of bender lower die production method following steps of the present invention carry out: forging after the heating of lower die raw material as blank, the constituent mass percentage of blank are as follows: C amount is 0.42~0.50%, Si content is 0.20~0.37%, Mn content 0.45~0.80%, Cr content≤0.24%, Ni content≤0.28%, Cu content≤0.24%, remaining content is Fe, blank keeps the temperature 5~7 hours at a temperature of 860~880 DEG C, it comes out of the stove and is air-cooled to room temperature, hardness is HB 170~179 after annealing, cut off head and end, four sides, which are processed, using milling machine is processed into mold drawing requirement shape, level is put into furnace at 860~900 DEG C of furnace temperature, room temperature is cooled to the furnace after 4~5h of heat preservation, again at 500~550 DEG C Internal stress is eliminated in lower heat preservation 5h~6h tempering, stands 36~48h, then carry out Surface Oxygen nitrogen treatment, carries out Milling Machining and corase grinding is processed, refined, polished, air-dry after applying preventive by dipping oil after polishing, obtain bender lower die.Bender lower die of the present invention is with high hardness while the toughness of mold is high.
Description
Technical field
The present invention relates to a kind of bending machine field, specifically a kind of bender lower die production method.
Background technique
Bending machine is a kind of machine that bending can be carried out to thin plate, and structure mainly includes bracket, workbench and clamping
Plate, workbench are placed on bracket, and workbench is made of pedestal and pressing plate, and pedestal is connected by hinge with clamping plate, and pedestal is by seat
Shell, coil and cover board composition, are widely used in: electromechanics, metal plate, light industry, aviation, ship, instrument, electric appliance, stainless steel products, steel
Structural construction and metallurgy industry etc. are used for the various steel plates of shearing bending, stainless steel, copper sheet, aluminium sheet and nonmetallic materials plate, it
Product can be converted into taper, arc, circle or perpendicular type etc., special shape mold can also be processed according to requiring to design,
With the continuous improvement of industrial automatization, higher and higher, existing bender lower die system is required to mould and die accuracy retentivity
Make method mainly to pass through: blank forging, roughing, heat treatment, finishing, the difference between various manufacturing methods is main
It is the control of temperature in the selection and heat treatment process of base mould material.Existing common bending machine lower die service life is low, work
It is poor to make part precision stability, influences product quality, mold materials is caused to waste, when common bending machine lower die hardness is high, mold
Toughness it is low, common bending machine lower die surface free specially treated, after a period of use, die surface be easy corrosion, influence
Mould and die accuracy and appearance.In response to this, it is proposed that a kind of bender lower die production method.
Summary of the invention
The purpose of the present invention is to provide a kind of bender lower die production methods, and not only bender lower die hardness is high, simultaneously
The toughness of mold is high, is not susceptible to situations such as bursting apart, improves the safety and service life of bending machine, while under bending machine
Mould carries out specially treated, makes bender lower die be not easy to get rusty, improves mould and die accuracy and appearance.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of bender lower die production method, production method sequentially include the following steps:
Step 1: it forging after the heating of lower die raw material as blank, the constituent mass percentage of blank are as follows: C amount is 0.42~
0.50%, Si content be 0.20~0.37%, Mn content 0.45~0.80%, Cr content≤0.24%, Ni content≤0.28%,
Cu content≤0.24%, remaining content are Fe.
Step 2: the blank after step 1 is forged keeps the temperature 5~7 hours at a temperature of 860~880 DEG C, comes out of the stove and is air-cooled to
Room temperature, hardness is HB 170~179 after annealing, and blank is at this time convenient for cutting.
Step 3: cutting off head and end for step 2 blank, is processed into mold drawing using four sides of milling machine processing and wants
Seek shape.
Step 4: the blank that step 3 obtains is put into level in furnace at 860~900 DEG C of furnace temperature, after keeping the temperature 4~5h
It cools to room temperature with the furnace, keeps the temperature 5h~6h tempering at 500~550 DEG C again and eliminate internal stress.
Step 5: the blank that step 4 is obtained stands 36~48h, then carries out Surface Oxygen nitrogen treatment, surface nitride layer
Depth layer is between 0.1~0.12mm, die surface hardness HV500~HV550.
Step 6: carrying out Milling Machining to the blank that step 5 obtains and corase grinding processed, be processed as semi-finished product lower die, unilateral pre-
Stay 0.8~1mm surplus.
Step 7: the semi-finished product lower die obtained to step 6 is refined, and drawing requirement size is processed as, reserved 0.05~
0.08mm surplus.
Step 8: the semi-finished product lower die obtained to step 7 polishes, and air-dries, is rolled over after applying preventive by dipping oil after polishing
Bender lower die.
Further, the step 3 is according to drawing requirement size, unilateral reserved 3mm surplus.
Further, surface roughness Ra >=1 when the step 6 is processed.
Further, 500 DEG C~520 DEG C of the oxynitriding temperature, oxynitriding time 18h~for 24 hours.
Beneficial effects of the present invention:
1, bender lower die of the present invention is with high hardness while the toughness of mold is high, is not susceptible to situations such as bursting apart, is conducive to
Improve bending machine service life；
2, the present invention is not susceptible to situations such as bursting apart, and protects the personal safety of operating personnel, improves the behaviour of bending machine
Make safety；
3, the present invention carries out specially treated to bender lower die, makes bender lower die be not easy to get rusty, improves mould and die accuracy
With appearance.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of bender lower die production method, production method sequentially include the following steps:
Step 1: it forging after the heating of lower die raw material as blank, the constituent mass percentage of blank are as follows: C amount is 0.42~
0.50%, Si content be 0.20~0.37%, Mn content 0.45~0.80%, Cr content≤0.24%, Ni content≤0.28%,
Cu content≤0.24%, remaining content are Fe.
Step 2: the blank after step 1 is forged keeps the temperature 5~7 hours at a temperature of 860~880 DEG C, comes out of the stove and is air-cooled to
Room temperature, hardness is HB 170~179 after annealing, and blank is at this time convenient for cutting.
Step 3: cutting off head and end for step 2 blank, is processed into mold drawing using four sides of milling machine processing and wants
Shape is sought, according to drawing requirement size, unilateral reserved 3mm surplus.
Step 4: the blank that step 3 obtains is put into level in furnace at 860~900 DEG C of furnace temperature, after keeping the temperature 4~5h
It cools to room temperature with the furnace, keeps the temperature 5h~6h tempering at 500~550 DEG C again and eliminate internal stress.
Step 5: the blank that step 4 is obtained stands 36~48h, then carries out Surface Oxygen nitrogen treatment, oxynitriding temperature
500 DEG C~520 DEG C, oxynitriding time 18h~for 24 hours, for surface nitride layer depth layer between 0.1~0.12mm, die surface is hard
Spend HV500~HV550.
Step 6: Milling Machining is carried out to the blank that step 5 obtains and corase grinding is processed, is processed as semi-finished product lower die, surface is thick
Rugosity processes Ra >=1, unilateral reserved 0.8~1mm surplus.
Step 7: the semi-finished product lower die obtained to step 6 is refined, and drawing requirement size is processed as, reserved 0.05~
0.08mm surplus.
Step 8: the semi-finished product lower die obtained to step 7 polishes, and air-dries, is rolled over after applying preventive by dipping oil after polishing
Bender lower die.
Embodiment 1
Bender lower die production is carried out according to the following steps:
Step 1: it forging after the heating of lower die raw material as blank, the constituent mass percentage of blank are as follows: C amount is 0.45%,
Si content is 0.3%, Mn content 0.6%, and Cr content 0.20%, Ni content 0.25%, Cu content 0.21%, remaining content is
Fe。
Step 2: the blank after step 1 is forged keeps the temperature 6 hours at a temperature of 870 DEG C, comes out of the stove and is air-cooled to room temperature, annealing
Hardness is HB 175 afterwards, and blank is at this time convenient for cutting.
Step 3: cutting off head and end for step 2 blank, is processed into mold drawing using four sides of milling machine processing and wants
Shape is sought, according to drawing requirement size, unilateral reserved 3mm surplus.
Step 4: the blank that step 3 obtains is put into level in furnace at 880 DEG C of furnace temperature, furnace cooling after 5h is kept the temperature
To room temperature, 5h tempering is kept the temperature at 520 DEG C again and eliminates internal stress.
Step 5: the blank that step 4 is obtained stands 40h, then carries out Surface Oxygen nitrogen treatment, oxynitriding temperature 510
DEG C, oxynitriding time 20h, surface nitride layer depth layer is in >=0.11mm, die surface hardness >=HV500.
Step 6: Milling Machining is carried out to the blank that step 5 obtains and corase grinding is processed, is processed as semi-finished product lower die, surface is thick
Rugosity processes Ra >=1, unilateral reserved 0.9mm surplus.
Step 7: the semi-finished product lower die obtained to step 6 is refined, and drawing requirement size is processed as, and reserves 0.05mm
Surplus.
Step 8: the semi-finished product lower die obtained to step 7 polishes, and air-dries, is rolled over after applying preventive by dipping oil after polishing
Bender lower die.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one implementation of the invention
In example or example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.
Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples to close
Suitable mode combines.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (4)
1. a kind of bender lower die production method, which is characterized in that its production method sequentially includes the following steps:
Step 1: it forging after the heating of lower die raw material as blank, the constituent mass percentage of blank are as follows: C amount is 0.42~
0.50%, Si content be 0.20~0.37%, Mn content 0.45~0.80%, Cr content≤0.24%, Ni content≤0.28%,
Cu content≤0.24%, remaining content are Fe；
Step 2: the blank after step 1 is forged keeps the temperature 5~7 hours at a temperature of 860~880 DEG C, comes out of the stove and is air-cooled to room temperature,
Hardness is HB 170~179 after annealing, and blank is at this time convenient for cutting；
Step 3: cutting off head and end for step 2 blank, processes four sides using milling machine and is processed into mold drawing requirement shape
Shape；
Step 4: the blank that step 3 obtains is put into level in furnace at 860~900 DEG C of furnace temperature, keeps the temperature after 4~5h with furnace
It is cooled to room temperature, keeps the temperature 5h~6h tempering at 500~550 DEG C again and eliminate internal stress；
Step 5: the blank that step 4 is obtained stands 36~48h, then carries out Surface Oxygen nitrogen treatment, surfaces nitrided layer depth
Layer is between 0.1~0.12mm, die surface hardness HV500~HV550；
Step 6: carrying out Milling Machining to the blank that step 5 obtains and corase grinding processed, and is processed as semi-finished product lower die, unilateral reserved
0.8~1mm surplus；
Step 7: the semi-finished product lower die obtained to step 6 is refined, and drawing requirement size is processed as, reserved 0.05~
0.08mm surplus；
Step 8: the semi-finished product lower die obtained to step 7 polishes, and air-dries after applying preventive by dipping oil after polishing, obtains bending machine
Lower die.
2. a kind of bender lower die production method according to claim 1, which is characterized in that the step 3 is according to drawing
Desired size, unilateral reserved 3mm surplus.
3. a kind of bender lower die production method according to claim 1, which is characterized in that the table when step 6 is processed
Surface roughness Ra >=1.
4. a kind of bender lower die production method according to claim 1, which is characterized in that the oxynitriding temperature 500
DEG C~520 DEG C, oxynitriding time 18h~for 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136624.9A CN109794556A (en) | 2019-02-25 | 2019-02-25 | A kind of bender lower die production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136624.9A CN109794556A (en) | 2019-02-25 | 2019-02-25 | A kind of bender lower die production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109794556A true CN109794556A (en) | 2019-05-24 |
Family
ID=66561181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910136624.9A Pending CN109794556A (en) | 2019-02-25 | 2019-02-25 | A kind of bender lower die production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109794556A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174540A (en) * | 2021-04-28 | 2021-07-27 | 重庆大学 | Low-cost die forged steel base material, sandwich layer forging die and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008056983A (en) * | 2006-08-30 | 2008-03-13 | Daido Steel Co Ltd | Precipitation hardening type stainless steel die |
| CN102581145A (en) * | 2012-03-23 | 2012-07-18 | 马鞍山市国菱机械刃模有限公司 | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die |
| CN103042191A (en) * | 2011-10-17 | 2013-04-17 | 严方 | Die material and processing method |
| CN105234295A (en) * | 2015-11-23 | 2016-01-13 | 安徽长江机床制造（集团）有限公司 | Lower die base of conical lamp pole bending machine and machining method of lower die base |
| CN106312485A (en) * | 2016-11-09 | 2017-01-11 | 安徽联盟模具工业股份有限公司 | High-precision long-service-life bending machine lower die manufacturing method |
| CN206335072U (en) * | 2017-01-05 | 2017-07-18 | 上海米勒焊接设备有限公司 | A kind of bending jig of inversion welding machine fast recovery rectifier diode pin |
-
2019
- 2019-02-25 CN CN201910136624.9A patent/CN109794556A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008056983A (en) * | 2006-08-30 | 2008-03-13 | Daido Steel Co Ltd | Precipitation hardening type stainless steel die |
| CN103042191A (en) * | 2011-10-17 | 2013-04-17 | 严方 | Die material and processing method |
| CN102581145A (en) * | 2012-03-23 | 2012-07-18 | 马鞍山市国菱机械刃模有限公司 | Method for manufacturing high-hardness and high-abrasion-resistant pre-bending machine lower die |
| CN105234295A (en) * | 2015-11-23 | 2016-01-13 | 安徽长江机床制造（集团）有限公司 | Lower die base of conical lamp pole bending machine and machining method of lower die base |
| CN106312485A (en) * | 2016-11-09 | 2017-01-11 | 安徽联盟模具工业股份有限公司 | High-precision long-service-life bending machine lower die manufacturing method |
| CN206335072U (en) * | 2017-01-05 | 2017-07-18 | 上海米勒焊接设备有限公司 | A kind of bending jig of inversion welding machine fast recovery rectifier diode pin |
Non-Patent Citations (1)
| Title |
|---|
| 周前、王红阁: "《金工实习》", 31 August 2017 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113174540A (en) * | 2021-04-28 | 2021-07-27 | 重庆大学 | Low-cost die forged steel base material, sandwich layer forging die and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103409688B (en) | Large forged high-speed steel cold roll and manufacturing method thereof | |
| CN108425046B (en) | Aluminum alloy for anodic oxidation and preparation method thereof | |
| CN1128889C (en) | Method for making carbon steel bands, in particular packaging steel bands, and resulting bands | |
| CN102747293A (en) | High-speed steel for high-toughness high-abrasion resistance hobbing cutter and preparation method thereof | |
| CN109468561B (en) | Preparation method of GH3625 alloy strip | |
| CN109957690B (en) | Preparation method of aluminum alloy composite material for electronic product appearance part | |
| CN100999802A (en) | High malleable high wear-resisting cold process mould steel | |
| CN102174936A (en) | Slide block for rotary type compressor and manufacturing method thereof | |
| Navinšek et al. | Novel applications of CrN (PVD) coatings deposited at 200 C | |
| CN107475653A (en) | A kind of preparation method of 3C Product TC4 titanium alloy plates | |
| CN109355561A (en) | Aluminium foil mill working roll and its manufacturing method | |
| CN105525230A (en) | Method for manufacturing cutting tools from high-speed W18Cr4Nb material | |
| CN105171364A (en) | Machining method of timing gear of heavy truck automobile engine | |
| CN109536792A (en) | A kind of production technology of mobile phone card slot and push-button material 6061 aluminium alloy of high-performance | |
| CN101825150B (en) | Bend-plate spring and making method thereof | |
| TWI554621B (en) | Manufacturing method for cold-working die | |
| CN106392492A (en) | Steel ball production machining method | |
| CN109794556A (en) | A kind of bender lower die production method | |
| CN106086700A (en) | A kind of cylinder jacket for Stirling engine and processing technique thereof | |
| CN114433648A (en) | Cold-drawing processing method of high-carbon chromium bearing steel guide rail blank | |
| CN109274231B (en) | Machining process for producing motor shell by using titanium metal | |
| CN109136746A (en) | A kind of bimetal bandsaw backing steel band and preparation method thereof | |
| CN107150212A (en) | A kind of forging technology of auto parts connecting rod blank | |
| CN105568152A (en) | Alloy powder, alloy raw material composition, alloy part, forming method of alloy part, vane and roller compressor | |
| CN1219663C (en) | Large gold coin with high figure relief and its mold making process |
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: 20190524 |