CN115418562A - Metal material for manufacturing die - Google Patents

Metal material for manufacturing die Download PDF

Info

Publication number
CN115418562A
CN115418562A CN202210957904.8A CN202210957904A CN115418562A CN 115418562 A CN115418562 A CN 115418562A CN 202210957904 A CN202210957904 A CN 202210957904A CN 115418562 A CN115418562 A CN 115418562A
Authority
CN
China
Prior art keywords
plastic
metal material
molds
mold
manufacturing
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
Application number
CN202210957904.8A
Other languages
Chinese (zh)
Inventor
王圣棻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pleiades Shanghai New Materials Co ltd
Original Assignee
Pleiades Shanghai New Materials Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pleiades Shanghai New Materials Co ltd filed Critical Pleiades Shanghai New Materials Co ltd
Priority to CN202210957904.8A priority Critical patent/CN115418562A/en
Publication of CN115418562A publication Critical patent/CN115418562A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/64—Treatment of workpieces or articles after build-up by thermal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F5/007—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Abstract

The application discloses a metal material for manufacturing a die, which comprises the following components in percentage by weight: 0.45 to 0.65 percent of C; si 0.2-0.35%; 0.9 to 1.2 percent of Mn; 2.6 to 3.5 percent of Cr; ni 0.9-1.2%; mo 0.45-0.6%; v0.08-0.15%; p is not higher than 0.035%; s is not higher than 0.02%; cu is not higher than 0.05%; al is not higher than 0.02%; the balance being iron. The metal material and the method for manufacturing the mold are suitable for producing molds of general plastics, such as plastic injection (molding) molds, plastic compression molds, plastic extrusion molds, plastic blow molding molds, plastic suction molds, high-foaming polystyrene forming molds and the like, and can be used for producing plastic parts such as automobile lamps, bumpers, interior trim parts, television shells, inner refrigerator shells and the like; especially, the mould that this application was made has good heat conductivity, to the production of the plastic products that production speed, production efficiency required are higher, is particularly suitable for.

Description

Metal material for manufacturing die
Technical Field
The invention relates to a metal material for preparing a mold, in particular to a 3D printing material for preparing a plastic mold and application thereof.
Background
Molds (also referred to as plastic molds) for processing plastic to shape are tools used in the plastic processing industry to match plastic molding machines to impart a complete configuration and precise dimensions to plastic articles. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are various, the variety and structure of plastic molds are also various. Specifically, the plastic mold may be classified into a plastic injection (molding) mold, a plastic compression mold, a plastic extrusion mold, a plastic blow mold, a plastic suction mold, a high expansion polystyrene molding mold, and the like.
Mold design and manufacture are closely related to plastic processing. The success or failure of plastic processing depends to a large extent on the effect of the mold design and the quality of the mold manufacture, and the plastic mold design is based on the correct plastic product design. Basic performance requirements for metal materials used in plastic molds include: sufficient surface hardness and wear resistance, excellent machinability, good polishing properties, good thermal stability, etc.
At present, the production efficiency of plastic products mainly depends on multiple factors such as an extruder, pressure maintaining and shaping time, mold recycling speed and the like, and particularly, the improvement of the mold recycling speed needs the mold to realize the temperature rise and fall more quickly so as to quickly produce the next product.
Disclosure of Invention
The application provides a metal material that can improve plastic products production efficiency's mould was used, and the mould of metal material preparation.
The first aspect of the application provides a metal material for manufacturing a mold, which comprises the following components in percentage by weight:
C 0.45-0.65％，
Si 0.2-0.35％
Mn 0.9-1.2％
Cr 2.6-3.5％；
Ni 0.9-1.2％；
Mo 0.45-0.6％；
V 0.08-0.15％；
p is not higher than 0.035%;
s is not higher than 0.02%;
cu is not higher than 0.05%;
al is not higher than 0.02%;
the balance being iron.
In a preferred embodiment, the metal material for manufacturing the mold is a 3D printing material, and more preferably, the metal material for manufacturing the mold is an SLM selective laser sintering 3D printing material.
In a preferred embodiment, the mold is
In a preferred embodiment, the content of C in the metal material for making the mold is preferably 0.5 to 0.6%, more preferably 0.54 to 0.65%, by weight. Such as 0.55%, 0.58%, 0.60%, 0.64%, etc.
In a preferred embodiment, the metal material for making the mold preferably contains 0.23 to 0.30 wt% of Si, more preferably 0.25 to 0.30 wt%, such as 0.26 wt%, 0.27 wt%, 0.28 wt%, 0.29 wt%.
In a preferred embodiment, the metal material for making the mold preferably contains Mn in an amount of 0.95 to 1.1 wt%, more preferably 0.95 to 1.05 wt%, such as 0.97 wt%, 0.98 wt%, 1 wt%, 1.02 wt%, 1.04 wt%.
In a preferred embodiment, the metal material for manufacturing the mold preferably contains, by weight, 2.8-3.3% of Cr, more preferably 2.8-3.3%; such as 3%, 3.1%, 3.2%.
In a preferred embodiment, the metal material for making the mold preferably contains, in terms of weight percent, ni in an amount of 0.92 to 1.1%, more preferably 0.94 to 1.0%; such as 0.95%, 0.96%, 0.97%, 0.98%, 0.99%.
In a preferred embodiment, the metal material for manufacturing the mold preferably contains 0.5 to 0.58% of Mo, more preferably 0.52 to 0.58% of Mo; such as 0.54%, 0.55%, 0.56%.
In a preferred embodiment, the content of V in the metal material for making the mold is preferably 0.09-0.14%, more preferably 0.1-0.13%, by weight; such as 0.11% and 0.12%.
In a preferred embodiment, the metal material for making the mould has a P content not higher than 0.035% by weight; more preferably not higher than 0.033%.
In a preferred embodiment, the metal material for manufacturing the mold has S not higher than 0.016% in percentage by weight; more preferably not higher than 0.014%.
In a preferred embodiment, the metal material for manufacturing the mold has Cu of not higher than 0.045% in weight percentage; more preferably not higher than 0.040%; preferably, the lower limit of the weight content of Cu may be not less than 0.03%, more preferably not less than 0.033%; for example, the Cu content may be 0.035-0.038%, such as 0.036%, 0.037% by weight.
In a preferred embodiment, the metal material for manufacturing the die has Al not higher than 0.015% by weight; preferably, the lower limit of the weight content of Al may be not less than 0.01%, more preferably not less than 0.011%; for example, al may be present in an amount of 0.011 to 0.015% by weight, such as 0.012%, 0.013%, 0.014%.
In a preferred embodiment, the metal material for making the mold has a weight percentage of P not higher than 0.033%; more preferably not higher than 0.032%.
In a preferred embodiment, the metal material for manufacturing the mold has S not higher than 0.016% in percentage by weight; more preferably not higher than 0.014%.
In a preferred embodiment, the metal material is a powder. More preferably, each component in the metal material is in an elemental powder state.
In a preferred embodiment, the powder particle size is no more than preferably 50-250 mesh, preferably 60-200 mesh
In a second aspect of the present application, there is provided a method of manufacturing a mold, the mold being manufactured by 3D printing using the above metal material.
In a preferred embodiment, the 3D printing employs an SLM process.
In a preferred embodiment, the 3D printing step includes: preheating the base material to more than or equal to 150 ℃, performing additive manufacturing on the metal powder through an SLM (selective laser melting) process to prepare a blank, and then tempering at 200-300 ℃ to eliminate stress.
More preferably, the parent material is preheated to 160 ℃ or more, more preferably 180 to 200 ℃.
More preferably, the tempering temperature is preferably 220-280 ℃, such as 230 ℃,250 ℃, 270 ℃.
In a preferred embodiment, the blank is provided with a surface allowance of no more than 1mm, and the allowance is removed before or after tempering.
In a preferred embodiment, the excess is at least on the inner surface of the mold (i.e. the surface of the monkey, which is the surface that contacts the plastic to be produced during the production of the plastic).
More preferably, the balance is not more than 0.8mm, more preferably not more than 0.5mm.
In a preferred embodiment, the 3D printing volume of the die is more than or equal to 100mm 3 More preferably ≥ 200mm 3 More preferably ≥ 300mm 3 。
A third aspect of the present application is to provide a mould, in particular a plastic mould (i.e. a mould for producing plastic articles), which is made of said metal material, preferably by means of 3D printing.
Preferably, the mould may be selected from: plastic injection mold, plastic compression mold, plastic extrusion mold, plastic blow mold, plastic suction mold, and high foaming polystyrene mold.
The metal material and the method for manufacturing the mold are suitable for producing molds of general plastics, such as plastic injection (molding) molds, plastic compression molds, plastic extrusion molds, plastic blow molds, plastic suction molds, high-foaming polystyrene forming molds and the like, and can be used for producing plastic parts such as automobile lamps, bumpers, interior trim parts, television shells, refrigerator inner shells and the like; particularly, the mold manufactured by the application has good thermal conductivity, and is particularly suitable for the production of plastic products with higher requirements on production speed and production efficiency.
Detailed Description
The present invention provides a metal material for manufacturing plastic molds and applications thereof, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It is to be understood that the terms "first," "second," and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order, it being understood that the data so used may be interchanged under appropriate circumstances. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1:
the metal material for manufacturing the die comprises the following components in percentage by weight:
C 0.56％，
Si 0.27％
Mn 0.97％
Cr 3.02％；
Ni 0.95％；
Mo 0.54％；
V 0.12％；
P 0.032％；
S 0.014％；
Cu 0.035％；
Al 0.012％；
the balance being iron.
The metal material is powder, each component is not simple substance powder, and the particle size of the powder is between 100 and 200 meshes.
Example 2:
the metal material for manufacturing the die comprises the following components in percentage by weight:
C 0.63％，
Si 0.27％
Mn 1.04％
Cr 3.0％；
Ni 0.98％；
Mo 0.54％；
V 0.12％；
P 0.033％；
S 0.016％；
Cu 0.038％；
Al 0.013％；
the balance being iron.
The metal material is powder, each component does not contain simple substance powder, and the particle size of the powder is 80-160 meshes.
Example 3:
the metal material for manufacturing the die comprises the following components in percentage by weight:
C 0.54％，
Si 0.27％
Mn 0.98％
Cr 3.0％；
Ni 0.98％；
Mo 0.55％；
V 0.12％；
P 0.032％；
S 0.016％；
Cu 0.036％；
Al 0.011％；
the balance being iron.
The metal material is powder, each component does not contain simple substance powder, and the particle size of the powder is between 100 and 180 meshes.
Example 4:
the metal material for manufacturing the die comprises the following components in percentage by weight:
C 0.58％，
Si 0.29％
Mn 1.02％
Cr 3.03％；
Ni 0.95％；
Mo 0.56％；
V 0.14％；
P 0.030％；
S 0.012％；
Cu 0.038％；
Al 0.013％；
the balance being iron.
The metal material is powder, each component is not simple substance powder, and the particle size of the powder is 90-160 meshes.
Example 5:
the metal material for manufacturing the die comprises the following components in percentage by weight:
C 0.61％，
Si 0.26％
Mn 1.00％
Cr 3.01％；
Ni 0.99％；
Mo 0.53％；
V 0.11％；
P 0.032％；
S 0.015％；
Cu 0.036％；
Al 0.012％；
the balance being iron.
The metal material is powder, each component is not simple substance powder, and the particle size of the powder is 80-170 meshes.
The SLM selective laser 3D printing process is adopted, and the printing volume is 200mm 3 For example, the base material is preheated to 180 ℃, and the surface has a 0.5mm allowance when printing, and the allowance can be removed by post-processing. After completion, the steel is tempered at 250 ℃ to relieve stress.
The performance test results of the products obtained in the above embodiments of the present application are as follows:
Figure BDA0003792076650000071
Figure BDA0003792076650000081
through the above table, can see that, the mould of this application satisfies the requirement of plastic mold to material hardness, toughness, and simultaneously, the gained mould of this application has very good coefficient of heat conductivity, when using, can rapid heating up to the temperature that needs, carries out plastic products's production, and after plastic products kept pressing the shaping in the mould, cooling that can be quick was taken out the product, then carries out the production of next product.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.

Claims (10)

1. The metal material for manufacturing the die is characterized by comprising the following components in percentage by weight:
C 0.45-0.65％，
Si 0.2-0.35％
Mn 0.9-1.2％
Cr 2.6-3.5％；
Ni 0.9-1.2％；
Mo 0.45-0.6％；
V 0.08-0.15％；
p is not higher than 0.035%;
s is not higher than 0.02%;
cu is not higher than 0.05%;
al is not higher than 0.02%;
the balance being iron.
2. A metal material according to claim 1, characterized in that the content of C is preferably 0.5-0.6%, more preferably 0.54-0.65%, in weight percent. Such as 0.55%, 0.58%, 0.60%, 0.64%.
3. A metallic material according to claim 1, characterized in that the content of Si is preferably 0.23-0.30%, more preferably 0.25-0.30%, such as 0.26%, 0.27%, 0.28%, 0.29% in weight percent.
4. A metal material according to claim 1, characterized in that the content of Mn is preferably 0.95-1.1%, more preferably 0.95-1.05%, such as 0.97%, 0.98%, 1%, 1.02%, 1.04% in weight percent.
5. A metallic material according to claim 1, characterized in that the content of Cr is preferably 2.8-3.3%, more preferably 2.8-3.3%, in weight percent; such as 3%, 3.1%, 3.2%.
6. A metallic material as claimed in claim 1, characterized in that the Ni content is preferably 0.92-1.1%, more preferably 0.94-1.0%, in weight percent; such as 0.95%, 0.96%, 0.97%, 0.98%, 0.99%.
7. A metallic material according to claim 1, characterized in that the content of Mo is preferably 0.5-0.58%, more preferably 0.52-0.58%, in weight percent; such as 0.54%, 0.55%, 0.56%.
8. A metal material according to claim 1, characterized in that the content of V is preferably 0.09-0.14%, more preferably 0.1-0.13%, in weight percent; such as 0.11% and 0.12%.
9. A method of making a mold, characterized in that the mold is made by 3D printing using the metal material as recited in claim 1.
10. A mold produced from the metal material according to claim 1.
CN202210957904.8A 2022-08-10 2022-08-10 Metal material for manufacturing die Pending CN115418562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210957904.8A CN115418562A (en) 2022-08-10 2022-08-10 Metal material for manufacturing die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210957904.8A CN115418562A (en) 2022-08-10 2022-08-10 Metal material for manufacturing die

Publications (1)

Publication Number Publication Date
CN115418562A true CN115418562A (en) 2022-12-02

Family

ID=84197549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210957904.8A Pending CN115418562A (en) 2022-08-10 2022-08-10 Metal material for manufacturing die

Country Status (1)

Country Link
CN (1) CN115418562A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86103713A (en) * 1986-05-28 1987-12-09 华中工学院 Easy cutting and high tougness die steel for plastics
CN1174896A (en) * 1996-04-29 1998-03-04 克罗索·洛利工业责任有限公司 Low alloy steel for manufacture of moulds for plastics
CN106636977A (en) * 2017-02-11 2017-05-10 广州市嘉晟精密科技有限公司 Heat-treatment-free pre-hardening plastic mold steel and 3D printing method thereof
CN107949651A (en) * 2015-09-11 2018-04-20 大同特殊钢株式会社 Die steel and forming tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86103713A (en) * 1986-05-28 1987-12-09 华中工学院 Easy cutting and high tougness die steel for plastics
CN1174896A (en) * 1996-04-29 1998-03-04 克罗索·洛利工业责任有限公司 Low alloy steel for manufacture of moulds for plastics
CN107949651A (en) * 2015-09-11 2018-04-20 大同特殊钢株式会社 Die steel and forming tool
CN106636977A (en) * 2017-02-11 2017-05-10 广州市嘉晟精密科技有限公司 Heat-treatment-free pre-hardening plastic mold steel and 3D printing method thereof

Similar Documents

Publication Publication Date Title
US2781552A (en) Process for making thin articles of polytetrafluoroethylene
CN109366840A (en) A kind of EPP product integral forming process with plasticizing dermatoglyph layer
EP3145690A1 (en) Method for producing three dimensional foam articles
CN101479063B (en) Fabrication method of alloy parts by metal injection molding and the alloy parts
CN104476108A (en) Method and device for producing electronic product shell
CN111940739B (en) Polymer composite stainless steel 3D printing material, preparation method and part preparation method
CN102407337A (en) Method for manufacturing titanium and titanium alloy powder metallurgy special-shaped pieces
CN105154700A (en) Heavy-density tungsten alloy
CN104128607A (en) Manufacturing technology of vehicle connecting rod
CN105290404A (en) Preparation method for hard alloy products by injection molding
CN103381467A (en) Opening and closing mold forming method for step type forge pieces
CN115418562A (en) Metal material for manufacturing die
KR20190074535A (en) A three dimensional printing method using metal powder
CN110982110B (en) Preparation process of foamed product and foamed product
CN107825725A (en) The more embedding seam production technology of mould zero
CN108620574B (en) Forming agent, feed and preparation method thereof, green body and preparation method thereof
CN101254517A (en) Silumin piston contour forging technique and mold
CN109807574B (en) Manufacturing process of combined die
CN103275393A (en) Glass fiber composite material applied to thin-walled part and preparation method thereof
CN111607232A (en) Composite part with IP sealing function and EMI function and forming method thereof
EP3763841A1 (en) Forming element of a mould for thermoforming articles made from foamed thermoplastic polymers and method for the manufacture thereof
CN105269796A (en) Molding technology for controlling wall thickness distribution of hollow blow-molded product through inflation pressure
CN107866935A (en) A kind of thermoplastic polyurethane product forming process for being used for extraordinary airtight clothes
EP4279242A1 (en) Method for manufacturing a rod-shaped fluoropolymer product
CN106834957A (en) Double-deck extrusion molding dies steel

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

Application publication date: 20221202

RJ01 Rejection of invention patent application after publication