CN104494125A - Forming mold of high temperature wear resistant coating for air valve and a processing technology thereof - Google Patents
Forming mold of high temperature wear resistant coating for air valve and a processing technology thereof Download PDFInfo
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- CN104494125A CN104494125A CN201410667026.1A CN201410667026A CN104494125A CN 104494125 A CN104494125 A CN 104494125A CN 201410667026 A CN201410667026 A CN 201410667026A CN 104494125 A CN104494125 A CN 104494125A
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Abstract
The invention relates to a forming mold of a high temperature wear resistant coating for air valves and a processing technology thereof. The forming mold comprises a mold body and a mold cavity within the mold body; the mold body includes a matrix and a matrix grey black nitridation high aluminum and titanium PVD coating arranged on the outer surface of the matrix ; and the mold cavity comprises a matrix cavity and a matrix cavity grey black nitridation high aluminium and titanium PVD coating arranged on the inner surface of the matrix cavity. The high temperature wear resistant coating is a grey black nitridation high aluminum and titanium PVD coating; due to the high aluminum content, the coating has excellent thermal resistance, hardness of more than 1800HV, thickness of 1-4 um, friction coefficient of 0.7, and high impact resistance at 900 DEG C, can prolong the service life of the mold, reduce the number of mold change by the workers, and improve production efficiency.
Description
Technical field
The present invention relates to a kind of mould, particularly relate to a kind of valve high temperature wear resistant coating mould.
Background technology
Valve hot forming tool adopts structure as shown in Figure 1 usually, and valve hot forming tool material generally adopts 3Cr2W8V.Because be thermoforming, having very high temperature during mould stock labour, in order to improve die life, is all in use adopt oil and graphite powder to be in harmonious proportion to carry out cooling, lubricating.However, the 3Cr2W8V mold use life-span is also undesirable, and die life is not ideal enough, and the single life-span is at 800 to 1000 times.And reparation comparatively bothers after wearing and tearing, need to carry out rough turn, finish turning, polishing, and mould repair once after entire life simultaneously in shortening, (mold height change); Can produce very large oil smoke in graphite oil cooling procedure during work, damage human body, working environment is very severe.
Summary of the invention
Present invention also offers a kind of valve high temperature wear resistant coating mould, when using this mould to produce valve, mould does not need graphite oil to cool, good work environment, die life is long, decreases the reparation number of times of mould and improves the surface roughness of valve blank.
The technical solution used in the present invention is for this reason: the present invention includes die ontology (1) and be opened in the mold cavity (2) in die ontology (1), and described die ontology (1) comprises matrix (11) and is arranged on matrix grey black nitrogenize high alumina titanium PVD coating (12) of matrix (11) outer surface; Described mold cavity (2) comprises matrix die cavity (22) and is arranged on matrix die cavity grey black nitrogenize high alumina titanium PVD coating (21) of matrix die cavity (22) inner surface.
Described matrix (11) material is H13 steel alloy.
A processing technology for valve high temperature wear resistant coating mould, carry out according to following steps:
1) blank carries out ten upsettings ten and pulls out and forge;
2) anneal: be warmed up to 850 DEG C ± 10 DEG C, insulation, then open fire door, after blank drops to 750 DEG C ± 10 DEG C, then be incubated, stove is as cold as 530 DEG C-550 DEG C and comes out of the stove, and room temperature cools;
3) roughing is carried out;
4) quench under the condition of 1050 DEG C;
5) Air flow after workpiece is cooled to 350-400 DEG C in quenching oil after heating;
6) tempering: adopt 600-650 DEG C of tempering three times;
7) fine finishining is shaping;
8) mold cavity surface carries out finishing polish process;
9) mold clean integral surface nitrogenize high alumina titanium PVD coating process.
Described 9) in step: matrix (11) outer surface and matrix die cavity (22) inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating.
Described coating layer thickness is 1-4um.
Advantage of the present invention is: high temperature wear resistant coating is grey black nitrogenize high alumina titanium PVD coating, because the composition containing aluminium is high, so its heat resistanceheat resistant performance is high, hardness is more than 1800HV, and thickness is 1-4um, and coefficient of friction is 0.7,900 DEG C time, there is higher shock resistance, extend the mold use life-span, decrease the die change number of times of workman, improve production efficiency; When using this mould to produce, do not need graphite oil to cool yet, improve working environment; Also need only carry out polishing and surface modification treatment to mould repair, repair also more easy, reduce the material cost of mould.
Matrix surface and cavity inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating, thus the processes strengthening surface of the work hardness and anti-wear performance forms, hardness is at more than 1800HV, there is higher shock resistance, because nitrogenize high alumina titanium PVD coating top layer obtains less hard particles, thus there is higher antiwear property, extend the mold use life-span, decrease the die change number of times of workman, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is background technology 3Cr2W8V die shape.
Fig. 2 is valve high temperature wear resistant coating mould of the present invention.
In figure, 1 is that die ontology, 2 is for mold cavity;
11 is that matrix, 12 is for matrix grey black nitrogenize high alumina titanium PVD coating;
21 is that die cavity grey black nitrogenize high alumina titanium PVD coating, 22 is for matrix die cavity.
Detailed description of the invention
Embodiment one:
The mold cavity 2 that the present invention includes die ontology 1 and be opened in die ontology 1, described die ontology 1 comprises matrix 11 and is arranged on the matrix grey black nitrogenize high alumina titanium PVD coating 12 of matrix 11 outer surface; Described mold cavity 2 comprises matrix die cavity 22 and is arranged on the matrix die cavity grey black nitrogenize high alumina titanium PVD coating 21 of matrix die cavity 22 inner surface.
Described matrix 11 material is H13 steel alloy.
A processing technology for valve high temperature wear resistant coating mould, carry out according to following steps:
1) blank carries out ten upsettings ten and pulls out and forge;
2) anneal: be warmed up to 850 DEG C, insulation, then open fire door, after blank drops to 750 DEG C, then be incubated, stove is as cold as 540 DEG C and comes out of the stove, and room temperature cools;
3) roughing is carried out;
4) quench under the condition of 1050 DEG C;
5) Air flow after workpiece is cooled to 380 DEG C in quenching oil after heating;
6) tempering: adopt 620 DEG C of tempering three times;
7) fine finishining is shaping;
8) mold cavity surface carries out finishing polish process;
9) mold clean integral surface nitrogenize high alumina titanium PVD coating process.
Described 9) in step: matrix 11 outer surface and matrix die cavity 22 inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating.
Described coating layer thickness is 4um.
Embodiment two:
The mold cavity 2 that the present invention includes die ontology 1 and be opened in die ontology 1, described die ontology 1 comprises matrix 11 and is arranged on the matrix grey black nitrogenize high alumina titanium PVD coating 12 of matrix 11 outer surface; Described mold cavity 2 comprises matrix die cavity 22 and is arranged on the matrix die cavity grey black nitrogenize high alumina titanium PVD coating 21 of matrix die cavity 22 inner surface.
Described matrix 11 material is H13 steel alloy.
A processing technology for valve high temperature wear resistant coating mould, carry out according to following steps:
1) blank carries out ten upsettings ten and pulls out and forge;
2) anneal: be warmed up to 840 DEG C, insulation, then open fire door, after blank drops to 760 DEG C, then be incubated, stove is as cold as 550 DEG C and comes out of the stove, and room temperature cools;
3) roughing is carried out;
4) quench under the condition of 1050 DEG C;
5) Air flow after workpiece is cooled to 350 DEG C in quenching oil after heating;
6) tempering: adopt 600 DEG C of tempering three times;
7) fine finishining is shaping;
8) mold cavity surface carries out finishing polish process;
9) mold clean integral surface nitrogenize high alumina titanium PVD coating process.
Described 9) in step: matrix 11 outer surface and matrix die cavity 22 inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating.
Described coating layer thickness is 1um.
Embodiment three:
The mold cavity 2 that the present invention includes die ontology 1 and be opened in die ontology 1, described die ontology 1 comprises matrix 11 and is arranged on the matrix grey black nitrogenize high alumina titanium PVD coating 12 of matrix 11 outer surface; Described mold cavity 2 comprises matrix die cavity 22 and is arranged on the matrix die cavity grey black nitrogenize high alumina titanium PVD coating 21 of matrix die cavity 22 inner surface.
Described matrix 11 material is H13 steel alloy.
A processing technology for valve high temperature wear resistant coating mould, carry out according to following steps:
1) blank carries out ten upsettings ten and pulls out and forge;
2) anneal: be warmed up to 860 DEG C, insulation, then open fire door, after blank drops to 740 DEG C, then be incubated, stove is as cold as 530 DEG C and comes out of the stove, and room temperature cools;
3) roughing is carried out;
4) quench under the condition of 1050 DEG C;
5) Air flow after workpiece is cooled to 400 DEG C in quenching oil after heating;
6) tempering: adopt 650 DEG C of tempering three times;
7) fine finishining is shaping;
8) mold cavity surface carries out finishing polish process;
9) mold clean integral surface nitrogenize high alumina titanium PVD coating process.
Described 9) in step: matrix 11 outer surface and matrix die cavity 22 inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating.
Described coating layer thickness is 2um.
Claims (5)
1. a valve high temperature wear resistant coating mould, comprise die ontology (1) and be opened in the mold cavity (2) in die ontology (1), it is characterized in that, described die ontology (1) comprises matrix (11) and is arranged on matrix grey black nitrogenize high alumina titanium PVD coating (12) of matrix (11) outer surface; Described mold cavity (2) comprises matrix die cavity (22) and is arranged on matrix die cavity grey black nitrogenize high alumina titanium PVD coating (21) of matrix die cavity (22) inner surface.
2. a kind of valve high temperature wear resistant coating mould according to claim 1, it is characterized in that, described matrix (11) material is H13 steel alloy.
3. a processing technology for valve high temperature wear resistant coating mould, is characterized in that, carries out according to following steps:
1) blank carries out ten upsettings ten and pulls out and forge;
2) anneal: be warmed up to 850 DEG C ± 10 DEG C, insulation, then open fire door, after blank drops to 750 DEG C ± 10 DEG C, then be incubated, stove is as cold as 530 DEG C-550 DEG C and comes out of the stove, and room temperature cools;
3) roughing is carried out;
4) quench under the condition of 1050 DEG C;
5) Air flow after workpiece is cooled to 350-400 DEG C in quenching oil after heating;
6) tempering: adopt 600-650 DEG C of tempering three times;
7) fine finishining is shaping;
8) mold cavity surface carries out finishing polish process;
9) mold clean integral surface nitrogenize high alumina titanium PVD coating process.
4. the processing technology of a kind of valve high temperature wear resistant coating mould according to claim 3, it is characterized in that, described 9) in step: matrix (11) outer surface and matrix die cavity (22) inner surface adopt nitrogen in glow discharge plasma to diffuse in delamination by nitrogenize high alumina titanium PVD coating.
5. the processing technology of a kind of valve high temperature wear resistant coating mould according to claim 3, it is characterized in that, described coating layer thickness is 1-4um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667026.1A CN104494125A (en) | 2014-11-20 | 2014-11-20 | Forming mold of high temperature wear resistant coating for air valve and a processing technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667026.1A CN104494125A (en) | 2014-11-20 | 2014-11-20 | Forming mold of high temperature wear resistant coating for air valve and a processing technology thereof |
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| CN104494125A true CN104494125A (en) | 2015-04-08 |
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|---|---|---|---|
| CN201410667026.1A Pending CN104494125A (en) | 2014-11-20 | 2014-11-20 | Forming mold of high temperature wear resistant coating for air valve and a processing technology thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364433A (en) * | 2015-11-27 | 2016-03-02 | 昆山惠众机电有限公司 | Hot-working die production technology |
| CN105671437A (en) * | 2016-01-25 | 2016-06-15 | 陈焕道 | Manufacturing method of restrictor of engine |
| CN109454417A (en) * | 2018-12-19 | 2019-03-12 | 襄阳新东特锻造有限公司 | A kind of process for forging of flange plate forged piece mold |
| CN109913797A (en) * | 2017-12-13 | 2019-06-21 | 维达力实业(深圳)有限公司 | Case-hardened graphite jig and its case-hardened method |
-
2014
- 2014-11-20 CN CN201410667026.1A patent/CN104494125A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105364433A (en) * | 2015-11-27 | 2016-03-02 | 昆山惠众机电有限公司 | Hot-working die production technology |
| CN105671437A (en) * | 2016-01-25 | 2016-06-15 | 陈焕道 | Manufacturing method of restrictor of engine |
| CN109913797A (en) * | 2017-12-13 | 2019-06-21 | 维达力实业(深圳)有限公司 | Case-hardened graphite jig and its case-hardened method |
| CN109454417A (en) * | 2018-12-19 | 2019-03-12 | 襄阳新东特锻造有限公司 | A kind of process for forging of flange plate forged piece mold |
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Application publication date: 20150408 |
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