DE19957878A1 - Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device - Google Patents

Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device

Info

Publication number
DE19957878A1
DE19957878A1 DE1999157878 DE19957878A DE19957878A1 DE 19957878 A1 DE19957878 A1 DE 19957878A1 DE 1999157878 DE1999157878 DE 1999157878 DE 19957878 A DE19957878 A DE 19957878A DE 19957878 A1 DE19957878 A1 DE 19957878A1
Authority
DE
Germany
Prior art keywords
vacuum
casting
maintenance
vacuum chamber
metal alloys
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.)
Withdrawn
Application number
DE1999157878
Other languages
German (de)
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.)
WELKER KARL HEINZ
Original Assignee
WELKER KARL HEINZ
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 WELKER KARL HEINZ filed Critical WELKER KARL HEINZ
Priority to DE1999157878 priority Critical patent/DE19957878A1/en
Publication of DE19957878A1 publication Critical patent/DE19957878A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44CJEWELLERY; BRACELETS; OTHER PERSONAL ADORNMENTS; COINS
    • A44C27/00Making jewellery or other personal adornments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/02Use of electric or magnetic effects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/15Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using vacuum

Abstract

Vacuum casting plant consists of a vacuum chamber (6) and a maintenance-free evacuated device.

Description

Jewelry is used to achieve a high quality cast in the Vacuum process cast. To do this, first a Wax model of the piece to be cast and possibly with other wax models connected to a casting tree. This Casting tree is in a so-called cuvette with a cast plaster-bound investment. To be a good one To reach the jacket of the model, the cuvette after the Pour the plaster-bound investment under a bell put and the bell evacuated. This will cause everyone to escape Air pockets in the gypsum-bonded investment. After The cuvette is heated to approx. 700-750 ° C in order to cure Melt out the wax model. To cool the To prevent melt, the temperature is then reduced to approx. 450-500 ° C (depending on the nature of the models). Is the When the temperature is reached, the cuvette is placed in a vacuum pot set and the pot is evacuated. Now the melt filled, the one under the melt in the mold Air through the porous structure of the gypsum bonded investment the vacuum chamber is sucked. This will be in specialist shops Evacuation devices are offered that have a plate with a rubber pad Embedding the wax model under the bell, a pot for evacuate the cuvette with the form, a maintenance-intensive Vacuum pump to achieve a 95% vacuum and the associated pneumatic and electrical switchgear.

The invention mentioned in claim 1 is based on the problem of simplifying the vacuum casting installation and its handling. This problem is solved by the features set out in claim 1:

  • 1. a vacuum chamber (no switching between bell and Pot necessary)
  • 2. Maintenance-free evacuation device

reached.

The advantages achieved with the invention are in particular in the fact that instead of a maintenance, operating and expensive vacuum casting machine a handy, maintenance-free and easy and safe to use casting machine is available.  

Incorrect operation of the system is impossible because except for the on-off switch and the automatically closing one Ventilation valve no controls are necessary.

An advantageous embodiment of the invention is in Claim 2 specified. Continuing education after Claim 2 makes by the described below Sealing zone additional heat-resistant, loose sealing elements included unnecessary on the casting machine.

An embodiment of the invention is in the drawings
VAK-00.00.00 VAK pouring device overall view
VAK-00.00.01 Scheme of the evacuation facility
VAK-00.00.02 Representation of the sealing zone
shown and is described in more detail below.

Explanation of the accompanying drawings 1. VAK-00.00.00 Vacuum casting device, overall view

1

Housing (case)

2nd

Vacuum pumps (max.Vacuum output approx. 80% each)

3rd

Check valves

4th

Intake filter to protect the vacuum pumps

5

Silencer

6

Vacuum chamber

7

Grid, removable

8th

Bell jar

9

On-off switch

10th

Cover plate

11

Cuvette

2. VAK-00.00.01 Scheme of the evacuation facility

Only by combining 2 maintenance-free vacuum pumps, each of which only reaches an approx. 80% vacuum with the two check valves it is possible to pour the Jewelry u. Allocate at least a necessary 95% vacuum generate and for the duration of the shape creation or to maintain the actual casting process.

1

Vacuum pump 2x

2nd

Check valve 2x

3rd

Suction filter

4th

Silencer

5

Ventilation valve

6

Manometer for checking the vacuum

7

heat-resistant piping

8th

Vacuum chamber

3. VAK-00.00.02 Representation of the sealing zone

Due to the special design of the sealing zone, loose Enclosed, heat-resistant sealing elements are superfluous. The vacuum chamber is made of aluminum, the cuvette is made from steel. Through this combination of materials and in the The shape shown in the drawing will provide adequate sealing reached during the casting process and prevents the Cuvette due to different thermal expansion during the Casting process stuck in the vacuum chamber. The seal when creating the shape under the bell is done by a commercially available O-ring.

Claims (2)

1. Vacuum casting machine especially for casting jewelry and. Ä. Made of precious metals and precious metal alloys, characterized in that the vacuum casting system consists of a vacuum chamber and a maintenance-free evacuation device.
2. vacuum chamber according to claim 1, characterized, that the chamber with a rubber elastic seal for the Vacuum bell and with a metallic sealing edge for the cuvettes is provided.
DE1999157878 1999-12-01 1999-12-01 Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device Withdrawn DE19957878A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999157878 DE19957878A1 (en) 1999-12-01 1999-12-01 Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1999157878 DE19957878A1 (en) 1999-12-01 1999-12-01 Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device

Publications (1)

Publication Number Publication Date
DE19957878A1 true DE19957878A1 (en) 2001-06-07

Family

ID=7931031

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999157878 Withdrawn DE19957878A1 (en) 1999-12-01 1999-12-01 Vacuum casting plant, for casting jewelery from precious metals and precious metal alloys, consists of vacuum chamber and maintenance-free evacuated device

Country Status (1)

Country Link
DE (1) DE19957878A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037456A1 (en) * 2008-10-16 2010-05-12 Carsten Sobczik Apparatus and methods for making poly-alloy trinkets
DE102009044282A1 (en) 2009-10-18 2011-05-05 Carsten Sobczik Pivotable vacuum casting plant comprises a melting crucible for the production of polyalloyed jewellery object, and a heating cell that is arranged near to the melting crucible and is equipped with a graphite-mold core in the interior

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008037456A1 (en) * 2008-10-16 2010-05-12 Carsten Sobczik Apparatus and methods for making poly-alloy trinkets
DE102008037456B4 (en) * 2008-10-16 2011-03-03 Carsten Sobczik Apparatus and methods for making poly-alloy trinkets
DE102009044282A1 (en) 2009-10-18 2011-05-05 Carsten Sobczik Pivotable vacuum casting plant comprises a melting crucible for the production of polyalloyed jewellery object, and a heating cell that is arranged near to the melting crucible and is equipped with a graphite-mold core in the interior

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee